John Beaumont, 4th Baron Beaumont (1361-1396) served in the French wars against the partisans of Pope Clement VII. He was Knighted by Edward III, and was Warden of the West Marches, Admiral of the North (sea), Constable of Dover Castle, and Lord Warden of the Cinque Ports. He was a Knight of the Garter and was 'one of the Embassy to France to demand Princess Isabel in marriage for the King'.

Beaumont was born in 1361 at Brabant, in Belgium. In 1389 he married Catherine Everingham (1367-1428) of Laxton, Nottinghamshire, England. His daughter Elizabeth married William Botreaux, father of Margaret Botreux who married Robert Hungerford.