Hij is getrouwd met Joan LA WARRE.
Zij zijn getrouwd april 1384 te Oakhanger, Hampshire, hij was toen 19 jaar oud.
Son of Sir Thomas West and Alice Fitzherbert, daughter of Reynold Fitzherbert. His father fought in the Battle of Crécy, in the second division under the Earl of Arundel and the Siege of Calais from 1346 to 1347 and held the office of Member of Parliament (M.P.) for Wiltshire in 1364/65.
Thomas West, 1st Baron West (1365 - 19 April 1405) West was the only son of Sir Thomas West (died 3 September 1386), of de Hampton Cantilupe (1312-1386), and Alice FitzHerbert (died 1395) the sister and co-heiress of Sir Edmund FitzHerbert. The younger Thomas almost certainly served alongside his father under Richard II; one of them was in active service in Calais in 1386, the year of his father's death. A knight banneret, he served in Ireland with the Duke of Aumale in 1399, and attended Richard's young Queen Isabella homeward to Calais in 1401.
When West was seventeen, he and his mother and sister Eleanor were assaulted and robbed, by Nicholas Clifton, who carried his sister off; he was probably the same Nicholas Clifton who later married her.
West was knighted in 1399, and summoned to Parliament as Lord West in 1402, by which time he held the manor of Harby, Nottinghamshire. He inherited the manor of Newton Tony, Wiltshire, from his father, and the manors of Midsomer Norton, Somerset, and Hinton Martell, Dorset, from his mother. He was later granted joint custody of Beaulieu Abbey. He died in 1405 and was interred at Christchurch Priory, Dorset.
West married, before 2 May 1384, Joan La Warre, widow of Ralph de Wilington (d. 16 August 1382) of Sandhurst, Gloucestershire, and daughter of Roger la Warr, 3rd Baron De La Warr (d. 27 August 1370), and his second wife, Eleanor Mowbray, daughter of John de Mowbray, 3rd Baron Mowbray, by Joan of Lancaster, daughter of Henry, 3rd Earl of Lancaster.
Joan la Warre was a half sister of John la Warr, 4th Baron De La Warr, and when he died without issue she became heiress to her younger half-brother, Thomas la Warr, 5th Baron De La Warr. They had three sons and a daughter:
Thomas (d. 29 or 30 September 1416), who married, before 2 July 1406, Ida Saint Amand (6 May 1392 - before 6 November 1416), daughter and co-heiress of Amaury de Saint Amand, 3rd Baron Saint Amand, by whom he had no surviving issue.
John (died c.1393)
Joan, who married firstly Richard Delabere, and secondly William Catesby.
SOURCE: Wikipedia - https://en.wikipedia.org/wiki/Thomas_West,_1st_Baron_West