John Montacute, 3rd Earl of Salisbury

John Montagu, 3rd Earl of Salisbury and 5th and 2nd Baron Montagu, KG (c. 1350 – 7 January 1400) was an English nobleman, one of the few who remained loyal to Richard II after Henry IV became king.

He was the son of Sir John de Montagu, 1st Baron Montagu (died in 1390), and Margaret de Monthermer. His father was the younger brother of William Montagu, 2nd Earl of Salisbury. His mother was the daughter of Thomas de Monthermer, 2nd Baron de Monthermer (1301 – Battle of Sluys, 1340), and Margaret Teyes (died in 1349) and granddaughter, and heiress, of Ralph de Monthermer, 1st Baron Monthermer, and Joan of Acre. As a young man, Montagu distinguished himself in the war with France, and then went to fight against the pagans in Prussia, probably on the expedition led by Henry Bolingbroke (the future Henry IV of England). Bolingbroke was to entrust his young son and heir, later Henry V, to the care of Sir John and his wife Maud following the death of his wife Mary de Bohun. Lady Salisbury cared for the young boy at a Montagu house in Welsh Bicknor near Monmouth until her death in 1395.

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