John de Montagu, 1st Baron Montagu

Arms of Montagu: Argent, three fusils conjoined in fess gules

Arms of Monthermer: Or, an eagle displayed vert beaked and membered gules. These arms were later quartered by the Montagu family, Earls of Salisbury, today Earls of Sandwich, after the marriage of John de Montacute, 1st Baron Montacute (died 1390) to the heiress Margaret de Monthermer, suo jure 3rd Baroness Monthermer (d.1395)

John de Montacute (c. 1330 - c. 1390) was a 14th-century English nobleman and loyal servant of King Edward III of England.

Origins

He was the son of William Montagu, 1st Earl of Salisbury by his wife Catherine Grandison, and younger brother of William de Montacute, 2nd Earl of Salisbury (1328-1397). He also had several younger sisters.

Career

He was summoned to parliament in 1357.^[1] Jean Froissart named "Lord John Mountacute" as one of the participants with King Edward III at the Siege of Calais in 1348.^[2]

Marriage & progeny

He married Margaret de Monthermer, daughter and heiress of Thomas de Monthermer, 2nd Baron de Monthermer by his wife Margaret de Brewes. His descendants thenceforth quartered the arms of Monthermer: Or, an eagle displayed vert beaked and membered gules. By his wife he had progeny:

• John Montacute, 3rd Earl of Salisbury, KG, (c.1350-1400).
• Eleanor Montacute, wife of John III Dinham (1359-1428).^[3]
• Thomas Montagu, Dean of Salisbury Cathedral

References

1. Stephen, Sir Leslie; Lee, Sir Sidney (1909). Dictionary of national biography. Smith, Elder & Co.
2. Froissart, John (1844). The Chronicles of England, France and Spain. London: William Smith. pp. 192–5.
3. J. Ravilious, CP Addition: Eleanor (Elena) de Montagu, wife of Sir John de Dinham, soc.genealogy.medieval, 27 Mar 2004. See also Douglas Richardson, D. Richardson, Plantagenet Ancestry: A Study in Colonial and Medieval Families (Salt Lake City, 2011), I:660-1