List of states in the Holy Roman Empire (B)

This is a list of states in the Holy Roman Empire beginning with the letter B:

Name	Type	Circle	Bench	Formed	Notes
Baar	Landgraviate	Swab			1500: To Swabian Circle
Babenhausen	Principality				1237: 1st mention of the Lordship of Babenhausen 12th century: Babenhausen and Schonegg part of Lordship of Kellmunz 1200-1300s: To Lords of Schonegg 1378: To Lords of Rechberg 1539: Anton Fugger bought Lordship of Babenhausen 1803: Lordships of Babenhausen, Boos and Kettershausen erected into Principality of Babenhausen for Fugger family 1806: To Bavaria Area: 52 km²; Pop. 11,000
Babenhausen-Mindelheim-Cellmünz	Lordship			1432: Partitioned from Staufeneck-Babenhausen	1487: Divided into Frundsburg and Kronburg
Baden	Margraviate	PR		c960	1190: Partitioned into Baden-Baden and Baden-Hachberg 1362: HRE Margrave 1387: Received a part of the County of Eberstein 1500: To Swabian Circle 1535: Partitioned into Upper Margraviate of Baden (Baden-Baden) and Lower Margraviate of Baden (Baden-Durlach) 1582: HRE Council of Princes 1771: Baden-Baden line extinct; Baden reunited 1803: Electorate 1806: Joined Confederation of the Rhine as a Grand Duchy 1871: Joined the German Empire Title:Grand Duke of Baden, Duke of Zähringen, Landgrave of Nellenburg, etc., Overlord & Hereditary Lord[Ober- und Erbherr] in the Baar & of Stühlingen, Heiligenberg, Hausen, Möskirch, Hohenhöwen, Wildenstein & Waldsberg, Mosbach & Dürn, Bischofsheim, Hardheim & Lauda, the Klettgau, Krautheim, Wertheim, Neudenau & Billigheim, Count of Salem, Petershausen & Hanau
Baden-Baden	Margraviate	Swab	PR	1190: Partitioned from Baden	1291: Partitioned into Baden-Baden, Baden-Eberstein and Baden-Pforzheim 1335: Divided between Baden-Eberstein and Baden-Pforzheim 1348: Partitioned from Baden-Pforzheim 1515: Partitioned into itself, Baden-Durlach and Baden-Sponheim 1536: Partitioned into itself and Baden-Rodemachern 1588: Annexed to Baden-Rodemachern 1622: Partitioned from Baden-Durlach 1771: United to form Baden
Baden-Durlach	Margraviate	Swab	PR	1515: Partitioned from Baden-Baden	1577: Partitioned into itself, Baden-Hachberg and Baden-Sausenburg 1771: United to form Baden
Baden-Eberstein	Margraviate			1291: Partitioned from Baden-Baden	1353: Annexed to Baden-Pforzheim
Baden-Hochberg	Margraviate	Swab	PR	1190: Partitioned from Baden	Also named Baden-Hachberg 1290: Partitioned into itself and Baden-Sausenburg 1415: Annexed to Baden-Baden 1482: Partitioned from Baden-Baden 1488: Annexed to Baden-Baden 1577: Partitioned from Baden-Durlach 1591: Annexed to Baden-Durlach
Baden-Pforzheim	Margraviate	n/a	n/a	1291: Partitioned from Baden-Baden	1315: Partitioned into itself and Baden-Baden 1361: Annexed to Baden-Baden
Baden-Rodemachern	Margraviate	Swab		1537: Partitioned from Baden-Baden	1575: Partitioned into itself and Baden-Rodenheim 1596: Annexed to Baden-Durlach 1622: Partitioned from Baden-Durlach 1666: Annexed to Baden-Baden
Baden-Rodenheim	Margraviate	Swab		1575: Partitioned from Baden-Rodemachern	1620: Annexed to Baden-Durlach
Baden-Sausenberg	Margraviate	Swab	PR	1290: Partitioned from Baden-Hachberg	1503: Annexed to Baden-Baden 1577: Partitioned from Baden-Durlach 1604: Annexed to Baden-Durlach
Baden-Sponheim	Margraviate	Upp Rhen		1515: Partitioned from Baden-Baden	1533: Annexed to Baden-Baden
Badenweiler	Lordship				1028: First mentioned 1503: Inherited by Baden-Baden
Baindt	Abbacy	Swab			1793: Council of Princes
Bamberg	Bishopric	Franc	EC	1007	c1242: Prince-Bishopric 1500: Franconian Circle 1793: Council of Princes 1802: Annexed to Bavaria 1803: Secularized to Bavaria
Bar Bar-le-Duc Barrois	Duchy	Upp Rhen		951	951: County 959-1033: Under Lorraine 1197-1214: Union of Bar and Luxemburg 1301: Vassal of King of France for the Western part of his territory (Barrois Mouvant) and vassal of the HRE for the Eastern part 1354: Emperor Charles IV granted title of Margrave of Pont-a-Mousson and rank of Prince to Duke of Bar 1399: Bar inherited Lordship of Cassel 1473: Union of Bar and Duchy of Lorraine 1480: Permanently united 1508: Inherited by Lorraine 1582: HRE Council of Princes 1634-1659, 1670–1697, 1702–1714: French occupation 1766: Together with Lorraine, permanently annexed to France
Barby	County	Upp Sax		1497	961: 1st mention of Barby 974: Emperor gave Barby to his sister, Mathilde, Abbess of Quedlinburg 1050: To Lords of Arnstein as an imperial fief Partitioned into: Barby-Arnstein (1209–1284), Barby-Barby (1213-1651), Barby-Lindow (1211–1372), Barby-Mühlingen (1565–1659) and Barby-Ruppin 1497: HRE County 1524: Barby-Rupin to Brandenburg 1651: Barby-Barby to Barby-Mühlingen (1360–1524) 1659: Barby-Mühlingen to Saxe-Weissenfels 1372: Barby-Lindow to Anhalt 1659: To Elector of Saxony
Barmstedt	Lordship				Acquired by Rantzau
Basel	Bishopric	Upp Rhen	EC	999	1579: Allied to the Swiss Confederation 1792: Annexed to the Rauracian Republic 1793: Council of Princes 1801: Mediatised to Baden and France
Basel	Free Imperial City	n/a			374: 1st mentioned as "Basilea" To Bishops of Basel 1356: Acquired sovereign rights (own currency, customs and judiciary) 1386: Free Imperial City 1501: Joined Swiss Confederation 1648: Left the Empire
Bassenheim	Lordship				to Waldbott of Bassenheim 1729: HRE Lordship
Bavaria	Kingdom	Bav	EL	6th century	888: Bavaria a stem duchy 889-1180: Ruled by the Welfs 1180-1918: Ruled by the Wittelsbachs 1185: Inherited lands of Burgraves of Regensburg 1214: Invested with County Palatinate of the Rhine 1238: Inherited lands of Counts of Valai Incorporated lands of Counts of Bogen Incorporated lands of Counts of Wassenburg 1255: First division into Upper (including Palatinate and Regensburg) and Lower Bavaria 1310: Division of Upper Bavaria into Bavaria-Munich and Bavaria-Ingolstadt 1314: Division into Palatinate (including Upper Palatinate) and Bavaria 1340: Lower Bavaria line died out 1349: Partition of Wittelsbach patrimony into: Upper Bavaria and Brandenburg; Bavaria-Munich; Lower Bavaria; and Holland, Zeeland, Frisia and Hainaut 1392: Division into Bavaria-Ingolstadt (extinct 1447), Bavaria-Landshut (extinct 1503) and Bavaria-Munich 1500: Bavarian Circle 1545: Bavaria reunited after many divisions 1582: HRE Council of Princes 1618: Acquired Mundelheim from Barons of Maxlrain Acquired Landgraviate of Leuchtenberg 1623: Electoral vote of Palatinate and Upper Palatinate transferred to Bavaria 1806: Became a Kingdom, then joined Confederation of the Rhine Title: King of Bavaria, Count-Palatine of the Rhine, Duke of Bavaria, Franconia & in Swabia, etc.
Bavaria-Ingolstadt	Duchy			1392: Partitioned from Bavaria-Landshut	1445: Annexed to Bavaria-Munich
Bavaria-Landshut	Duchy			1353: Partitioned from Lower Bavaria	1503: Annexed to Bavaria-Munich
Bavaria-Munich	Duchy			1392: Partitioned from Bavaria-Landshut	1505: Became D. of Bavaria
Bavaria-Straubing	Duchy			1353: Partitioned from Lower Bavaria	1425: Divided between Bavaria-Ingolstadt, Bavaria-Landshut and Bavaria-Munich
Bayer-Naumburg	Lordship			1316: Partitioned from Querfurt	1496: Annexed to Mansfeld
Bayreuth	Principality				1194: 1st mention of Bayreuth 1248: To Counts of Zollern & Burgraves of Nuremberg 1363: Counts of Zollern as HRE Princes 1398: Principality 1420-1440: Under Nuremberg 1457-1486: Administered by Ansbach 1495-1515: Administered by Ansbach 1500: Franconian Circle 1557-1603: Administered by Ansbach 1791: Integrated into Prussia 1806: French administration 1810: To Bavaria Title: Prince and Margrave of Bayreuth
Beckenried	Abbacy				HRE Abbacy
Bedburg	County			1465: Partitioned from Neuenahr	1519: Annexed to Mörs
Beichlingen	Lordship			1144	1275: Partitioned into Beichlingen-Beichlingen and Beichlingen-Rothenburg 1567: Annexed to Gleichen
Beilstein	County				1500: Westphalian Circle 1512: Electoral Rhenish Circle 1679: The Lordship became a County (for House of Metternich)
Belfort	Jurisdiction				13th century: To Counts of Montbeliard 1307: Granted a charter To Austria 1648: Ceded to France Louis XIV of France gave it to Cardinal Mazarin
Benevento	Duchy			576	899: Atenulf I of Capua conquered Benevento and united the 2 duchies 1053: To Papal States
Bentheim Count of Bentheim, Tecklenburg, Steinfurt & Limburg, Lord of Rheda, Wevelinghoven, Hoya, Alpen, Helpenstein, Baron of Lennep, Hereditary Advocate[Erbvogt] of Köln	County (1182) 1486: HRE County	Low Rhen	WE	1050	1115: Passed to Count Otto of Salm Marriage of Otto's heiress, Sophia (d.1176), Countess of Rheineck, Salm and Bentheim to Dirk VI, Count of Holland 1146-1182: A fief of Bishopric of Utrecht 1176: Passed to Counts of Holland 1263: Annexed County of Tecklenburg 1277: Partitioned into Bentheim-Tecklenburg and Bentheim-Bentheim 1421/1468: Bentheim became an immediate fief of the Empire 1500: Westphalian Circle 1530-1643: To County of Steinfurt 1606/1610: Division into Bentheim-Tecklenburg (with Rheda and Hohenlimburg) and Bentheim-Steinfurt 1752: Bentheim mortgaged to and was seized by Elector of Hanover 1804: Annexed to Steinfurt 1806: Mediatised to Berg 1810: Annexed to France 1815: To Hanover
Bentheim-Alpen	County (1606–1629)
Bentheim-Bentheim	County (1277–1530, 1643–1753, 1753–1803)			1277: Partitioned from Bentheim (like Bentheim-Tecklenburg)	1530: Line of Bentheim-Bentheim became extinct; Bentheim granted to Arnold II of Bentheim-Steinfurt 1753-1803: Seized by the Elector of Hanover 1803: Bentheim reunited with Bentheim-Steinfurt
Bentheim-Limburg	County (1606–1632)
Bentheim-Lingen	County (1450–1555)
Bentheim-Steinfurt	County (1454-1803) Prince of Bentheim-Steinfurt in Prussia	Low Rhen	WE	1454: Split off from Co. of Bentheim-Bentheim	1643: Partitioned into Bentheim-Steinfurt and Bentheim-Bentheim 1806: Mediatised to Berg (which obtained Bentheim) and Prussia (which obtained Steinfurt)
Bentheim-Tecklenburg	County (1277–1557) 1817: Prince of Bentheim-Tecklenburg in Prussia			1277: Partitioned from Bentheim (like Bentheim-Bentheim)
Bentheim-Tecklenburg-Rheda	County (1606–1806)			1606: Partitioned from Bentheim-Steinfurt	1806: Mediatised to Prussia
Bentinck HRE Count of Bentinck and Aldenburg, Lord of the free Lordship of Knyphausen, Noble Lord of Varel	HRE Counts (1732)				1733/1800 immediate Lords of Knyphausen & Varel Aug 1806-1807 sovereign Lords of Knyphausen & Varel 1814/15 Lords of Knyphausen & Varel under the overlordship of Oldenburg
Berchtesgaden Prince, Provost and Lord of Berchtesgaden	Provostry	Bav		1491	1108: Abbacy 1491: Provostry of the HRE 1500: Bavarian Circle 1803:Annexed to Salzburg 1793: Council of Princes 1803: Annexed to Salzburg 1805: Annexed to Austria 1809: Annexed to Bavaria
Berg	Duchy	Low Rhen	PR	1077	1077: County, to the counts of Berg (later counts of Isenberg, Altena and Limburg Styrum), an offshoot of the House of Ezzonen 1218: County, to Duchy of Limburg 1380: Duchy 1437: To Duchy of Julich 1511: To Duchy of Cleves 1521: United with Mark and Cleves 1582: HRE Council of Princes 1609: War of Successions 1614: To Palatinate-Neuburg 1685: To the Electorate of the Palatinate 1777: To Bavaria 1806: To Grand Duchy of Berg 1815: To Prussia
Bern Berne	Imperial Free City (1218)			1218: Split off from Zähringen	1191: Founded by Duke Berthold V of Zahringen 1353: Joined the Swiss Confederation 1415: Invaded and acquired Aargau 1536: Invaded and acquired Vaud 1648: Left the Empire 1798: French occupation
Besançon	Archbishopric		EC		1512: Burgundian Circle 1792: Annexed to France 1793: Council of Princes
Besançon	Imperial City (1184)	Burg			1300s: Taken by Dukes of Burgundy 1477-1674: Passed to Habsburgs 1648: Annexed by Free County (a special Co.) of Burgundy ("Franche-Comté") 1674: Ceded to France
Biberach an der Riß	Imperial City	Swab	SW	1180	1803: Annexed to Württemberg
Billung March	Margraviate			928	983: Conquered by the Obotrites
Bilstein	County			1073	1145: 1st mention of "Counts of Bilstein" 1301: Line of counts died out; Bilstein sold to Hesse 1303: Annexed to Hesse
Birkenfeld	County (1569) 1817: Principality				1444: Part of Zweibrücken 1801: Annexed by France 1816: Prussian rule 1817: Principality of Birkenfeld in personal union with Oldenburg
Bitburg	Abbacy
Bitsch	Lordship				To Zweibrücken
Blamont	Lordship
Blankenburg	County (1123) 1707: Principality of Imperial immediacy	Low Sax		c1082 1180: Partitioned from the older Duchy of Saxony	Before 1180: Fief of older Duchy of Saxony, till emperor deposed Henry the Lion 1180: As fief to Prince-Bishopric of Halberstadt at the carve-up of the older Duchy of Saxony 1368: Inherited by County of Regenstein 1599: Counts extinct, fief reverted to Halberstadt, prince-bishop enfeoffed relative from House of Welf 1651: In personal union with the Brunswick-Lunenburgian principality of Wolfenbüttel 1707: End of Halberstadt's overlordship 1731: Brunswick-Lunenburgian Wolfenbüttel line extinct, Blankenburg inherited Wolfenbüttel 1806: Annexed to Kingdom of Westphalia 1814: Blankenburg and Pr. of Wolfenbüttel merged in Duchy of Brunswick
Blankenheim	Lordship (1112) 1380: County 1461: HRE County of Manderscheid and Blankenheim			1149: Partitioned from Blankenheim-Schleiden	1112: 1st mention of Lord of Blankenheim Acquired Lordships of Kronenburg, Junkerath, Dollendorf, Gerolstein, Erp, Neuerburg, Oberkail, Falkenstein, Bettingen, Manderscheid, Osann-Monzel 1406: Counts of Blankenheim died out; passed by female succession to Lords of Heinsberg To Counts of Manderscheid 1699: Imperial Estate Counts of Manderscheid-Blankenheim died out; passed by marriage to Counts of Sternberg 1803: Annexed to France 1816: To Prussia
Blankenheim and Gerolstein	County	Low Rhen		1488: Partitioned from Blankenheim	1533: Partitioned into Blankenheim and Gerolstein and Bettingen
Blankenheim-Schleiden	Lordship			c1115	1149: Partitioned into Blankenheim and Schleiden
Bludenz	County				1394: To Austria
Blumenegg	Lordship 1396: Imperial County			1804: Lordship of Blumenegg-Sankt Gerold to Austria
Bohemia	Principality (845) Duchy 1198: Kingdom	None	EL	c890: Joined the Empire	1356: Prince-Elector
Bonndorf	County	Swab
Boos	Lordship				1803: To Principality of Babenhausen for Fugger house
Bopfingen	Imperial Free City	Swab	SW	c1250	1803: Annexed to Württemberg
Bouillon	County Duchy			959; 1496; 1559	1095, 1522: Annexed to Prince-Bishopric of Lüttich (Liège) 1552, 1676: Annexed to France
Brabant	Landgraviate (1085/1086) 1090: Duchy1183/1184: Duchy Claimed status of archduchy	Burg	PR	11th century: Emerged from division of the Duchy of Lower Lorraine into several feudal states	1283: John I of Brabant bought the Duchy of Limburg from Adolph V of Berg 1430: Passed to D. of Burgundy 1477: Passed to the House of Habsburg 1512: Burgundian Circle 1556: Passed to the Spanish Habsburgs 1582: HRE Council of Princes 1609: northern Brabant awarded to the United Provinces; southern portion remain part of Spanish (later Austrian) Netherlands
Brakel	Imperial City	Low Rhen	RH		Held by Bp. of Paderborn
Brandenburg	Margraviate 1356: HRE Prince-Elector	Upp Sax	EL	1157: Originally created as the "Northern March"	1415: Hohenzollerns purchase Brandenburg from HRE
Brandenburg	Bishopric	Upp Sax	EC	949	1569: Annexed to the secular Electorate of Brandenburg
Brandenburg-Ansbach	Margraviate	Franc	PR	1440 as a partition of Bgv. Nuremberg	1582: HRE Council of Princes 1791: Passed to Brandenburg
Brandenburg-Bayreuth	Margraviate	Franc	PR	1440 as a partition of Bgv. Nuremberg	1582: HRE Council of Princes 1769: Passed to Brandenburg-Ansbach
Brandenburg-Kulmbach	Margraviate			1655: Partitioned from Brandenburg-Bayreuth	1726: Re-annexed to Brandenburg-Bayreuth
Brandenburg-Küstrin	Margraviate			1535: Partitioned from Brandenburg	1571: Re-annexed to Brandenburg
Brauneck	County			1230 as a partition of Hohenlohe	Partitioned several times. 1340, 1391, 1448: All re-annexed to Hohenlohe
Breda	Barony				11th century: A direct fief of the Holy Roman Emperor 1327: Adelheid of Gaveren sold Breda to John III, Duke of Brabant 1350: Breda sold to John II of Wassenaar (d.1377) 1403: To Counts of Nassau by the marriage of Johanna of Polanen, heiress of Breda, to Engelbert I of Nassau
Bregenz	County	Swab	SW	950	802: 1st mention of Bregenz castle 926: 1st mention of Ulrich VI as "Count of Bregenz" 970: Division of the House of Bregenz (Pfullendorf, Lustenau) Annexed to Tübingen 1152/1160: Line of Counts of Bregenz died out 1171: Marriage of Hugo II (d.1182), Count Palatine of Tübingen with Elizabeth (d.1216), heiress of Montfort and Bregenz 1180: Annexed to Montfort 1451/1458: Annexed to Austria 1782: Annexed to Bavaria
Brehna	County
Breisgau	County Landgraviate	n/a	SW	771	1077: Annexed by Zähringen 1512: Austrian Circle
Breisgau	Duchy	Aust	SW	1801	1803: Reconstituted as Breisgau-Modena
Breisgau-Modena	Duchy	Aust	SW	1803	1805: Divided between Baden and Württemberg
Breitenbrunn	HRE Lordship
Breiteneck Breitenegg	HRE Lordship (1631)	Bav			1129: Breitenegg castle and Lordship of Breitenbrunn owned by Lords of Breitenbrunn 1247-1289: 1st certain owner was Werner V of Laaber 1500: Bavarian Circle Sold to Counts of Hirschberg 1302: Sold to Hadamar II of Laaber 1433: Bought by Heinrich of Gumppenberg 1463: Reddemed by Ulrich of Laaber 1465: Sold to Konrad of Pappenheim 1473: Sold to Martin and Ludwig of Wildenstein 1583: Wildenstein line died out 1592: Lordship divided between Neuburg and Bavaria 1624: Given by Maximilian I to Tilly (extinct, 1724) as a gift 1744: Inherited by Lords of Gumppenberg 1792: Sold to Karl Theordor of Bavaria in personal union
Bremen	Archbishopric (1072) 1180: HRE Prince-Archbishopric 1648: Duchy	Low Sax	EC	1180: partitioned from the Duchy of Saxony	805: Bishopric founded 848-1072: In personal union with Bishopric of Hamburg 1648: secularised as Duchy of Bremen, ruled as Bremen-Verden in personal union with the Principality of Verden
Bremen	Imperial City (1646)	Low Sax	RH	1202	1358: Joined Hanseatic League 1810: Annexed by France 1815: Free City
Bremen-Verden	Duchy of Bremen and Principality of Verden	Low Sax		1648: secularised Prince-Archbishopric of Bremen and Prince-Bishopric of Verden, always ruled in personal union	1648: In personal union (p.u.) with Sweden 1712: Danish occupation 1715: Sold to the Electorate of Hanover 1719: In personal union with Hanover 1807: Annexed to the Kingdom of Westphalia 1810: Annexed to France 1813: In personal union with Hanover 1814/1823: Merged in the Kingdom of Hanover as Stade Region
Brehna	Barony			1156	1290: Annexed by Saxe-Wittenberg
Bretzenheim HRE Prince of Bretzenheim and Count of Lindau	HRE Count of Bretzenheim (1774) 1790: HRE Principality	Upp Rhen		1790 for the Wittelsbach-Bretzenheim branch	1769: Counts of Heydeck To Velen 1780: immediate Lord of Bretzenheim 1790: Imperial estate 1802: Central German territories annexed by Hesse-Darmstadt 1803: Prince granted County of Lindau am Bodensee 1804: Southern German territories annexed by Austria
Brixen	Bishopric (1027) 1179: Prince-Bishopric	Aust	EC	1179	1512: Austrian Circle 1793: Council of Princes 1803: Secularized and annexed by Austria to Krain (Carniola) 1805: To Bavaria 1814: To Austria 1918: To Italy
Broich	Lordship			1093: 1st mention of Lords of Broich	883: Broich castle for defense against Viking attacks Under overlordship of Dukes of Berg Freed from Dukes of Berg 1372: Line of Lords of Broich became extinct; passed to Counts of Limburg-Styrum 1413: Dukes of Berg regained overlordship after decline of Counts of Limburg 1432: Dukes of Cleves conquered Broich 1439: Start of new line called Counts of Limburg-Broich 1508: To Counts of Dhaun-Falkenstein 1682: To Counts of Leiningen 1806: Lordship of Broich abolished.
Bruchhausen	County			1199	1234: Partitioned 1338, 1388: Annexed by County of Hoya
Bruchsal and Odenheim	Abbacy				1793: Council of Princes
Brunswick	Duchy	n/a	n/a		1267: Division into Brunswick and Luneburg
Brunswick-Bevern	Duchy			1666: Partitioned from Brunswick-Wolfenbüttel	1735: Annexed to Brunswick-Wolfenbüttel 1735: Partitioned from Brunswick-Wolfenbüttel
Brunswick-Calenberg	Duchy	Low Sax	PR	1495: Partitoned from Brunswick-Wolfenbüttel	1584: Annexed to Brunswick-Wolfenbüttel
Brunswick-Calenberg-Göttingen	Duchy	Low Sax	PR	1641: Partitioned from Brunswick-Lüneburg	1692: Became the Electorate of Hanover
Brunswick-Celle	Duchy	Low Sax	PR	1527: Partitioned from Brunswick-Lüneburg	1569: Partitioned into Brunswick-Dannenberg and Brunswick-Lüneburg
Brunswick-Celle	Duchy	Low Sax	PR	1641: Partitioned from Brunswick-Lüneburg	1705: Annexed to Hanover
Brunswick-Göttingen	Duchy	n/a	n/a	1279: Partitioned from Brunswick	1345: Partitioned into itself and Brunswick-Wolfenbüttel 1442: Annexed to Brunswick-Wolfenbüttel
Brunswick-Grubenhagen	Duchy	Low Sax	PR	1279: Partitioned from Brunswick	1322: Partitioned into itself and Brunswick-Osterode 1526: Annexed to Brunswick-Osterode
Brunswick-Lüneburg Duke of Brunswick and Luneburg	Duchies of Brunswick and Luneburg (1235)	Low Sax	PR		1235: Emperor Frederick II created duchies of Brunswick and Luneburg 1267: Division into Brunswick and Lüneburg 1285: Duchy of Brunswick divided into Brunswick-Wolfenbüttel, Brunswick Göttingen and Brunswick-Grubenhagen 1292: Brunswick-Wolfenbüttel line died out 1345: New line of Brunswick-Wolfenbüttel founded 1369: Line of dukes of Lüneburg died out 1369: To Saxony 1388: Lüneburg incorporated into Brunswick-Wolfenbüttel 1432: Brunswick divided into Brunswick-Calenberg and Brunswick-Wolfenbüttel 1463: Elder Brunswick-Göttingen died out 1396: Brunswick-Grubenhagen line died out 1527: Partitioned 1582: Inherited 1/2 of County of Hoya 1585: Inherited County of Diepholz 1633: Inherited Principality of Grubenhagen 1689: Inherited Duchy of Launeburg Inherited by Calenberg (personal union)
Brunswick-Wolfenbüttel	Duchy	Low Sax	PR	1345: Partitioned from Brunswick-Göttingen	1373: Partitioned into itself, Brunswick-Einbeck and Brunswick-Lüneburg 1495: Partitioned into itself and Brunswick-Calenberg 1666: Partitioned into itself and Brunswick-Bevern 1735: Partitioned into itself and Brunswick-Bevern
Buchau	Abbacy (c. 770) 1447: HRE Princess-Abbess	Swab			1625: Acquired Lordship of Strassberg 1793: Council of Princes 1803: Secularized and given to Prince of Thurn und Taxis 1806: Annexed to Württemberg; Strassberg to Hohenzollern-Sigmaringen
Buchau	Imperial City	Swab	SW	c1250	1803: Mediatised to Thurn und Taxis 1806 annexed by Württemberg
Buchhorn (Friedrichshafen)	Imperial City	Swab	SW	1089	1803: Mediatised to Württemberg
Burgau	Margraviate			1212	1301: Acquired by Austrian Habsburgs 1304: Imperial fief of Burgau invested in sons of King Albert I
Burgbrohl	Lordship			1451: Partitioned from Saffig	1533: Annexed to Saffig-Olbrück
Burgundy Franche-Comté	Free County (915) County Palatine	Burg	PR	1127	1330: Passed to D. of Burgundy 1405-1556: To Dukes of Burgundy 1556: To Habsburg Kings of Spain 1678: Annexed to France
Burgundy	Duchy				1582: HRE Council of Princes
Bürresheim Burresheim	Lordship
Burtscheid	Abbacy			997	1793: Council of Princes
Butzweiler	Lordship
Buxheim	Abbacy

References