Duchy of Zaslawye
      
Duchy of Zasłaŭje, or Iziaslavl (Belarusian: Княства Заслаўскае') was a duchy on the territory of modern Belarus with the centre in the city of Zasłaŭje.
Chronology
-  To Duchy of Polatsk until 976...
-  To Duchy of Novgorod, 976–980
-  To Duchy of Kiev, 980
-  Rurikovich
-  Izyaslav of Polotsk (in Polatsk from 988), 980–1001
-  Vseslav I (also in Minsk), 1001–1003
-  To Polatsk, 1003–1101
-  David (in Polatsk 1116–1127), 1101–1116, died after 1129
-  Bryachislav, 1116–1127, died after 1129
-  David (in Polatsk 1128–1129), (restored) 1127–1128
-  Bryachislav, (restored) 1128–1129
-  To Polatsk, 1129–1146
-  Bryachislav II (in Vitebsk 1167–1186), 1146–1151, died 1186
-  Vsevolod, 1151–1158 d. aft. 1159
-  Bryachislav II, (restored) 1158–1159, died 1186
-  Vsevolod, (restored) 1159
-  Bryachislav II, (re-restored) 1159–1167, died 1186
-  Basil (in Vitsebsk 118?–1221), 1167–118?, died 1221
-  Vladimir (in Polatsk from 1197), 118?–1215
-  No information after 1215 (probably to the Grand Duchy of Lithuania)
-  Jaunutis (Iwan I), 1347–1366
-  Michal I Zaslawski, 1366–1399
-  Jerzy Zaslawski, 1399–14??
-  Iwan II Zaslawski, fl. 15th century
-  Michal II Zaslawski fl. 15th century
-  Fiodor Zaslawski, 14??–1508, died after 1508
 See also 
| | East Slavic principalities of the pre-Mongol period | 
|---|
 |  |  | Main Principalities |  | 
|---|
 |  |  | Other Principalities |  | 
|---|
 |