He fought in the Battle of Agincourt on 25 October 1415, where he commanded the left wing of the English Army. He has an extensive biographical entry in the Dictionary of National Biography.
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SIR THOMAS DE CAMOYS, nephew, or more probably half-nephew, being son and heir of Sir John de CAMOYS, a son of Sir Ralph de CAMOYS by his 2nd wife, Elizabeth. He succeeded to the family estates in 1372. In 1383 he, as a banneret, obtained exemption from serving in Parliament as a knight of the shire for Surrcy. He was summoned to Parliament from 20 August 1383 to 26 February 1420/1 by writs directed Thome Camoys ch'r, whereby he is held to have become LORD CAMOYS. A Commission issued to him 7 September 1403, simply as "Thomas Camoys chivaler." He commanded the left wing of the English army at the battle of Agincourt, 25 October 1415. He was nominated K.G. circa 1415. He married, 1stly, Elizabeth, daughter and heir of William LOUCHFS, of Milton, co. Oxford. He married, 2ndly, Elizabeth, widow of Sir Henry PERCY, K.G., styled LORD PERCY (the famous " Hotspur," slain in 1403, daughter of Edmund (MORTIMER), EARL OF MARCH, by Philippe, daughter and heir of Lionel, DUKE OF CLARENCE. She died 20 April 1417, seised of certain manors in Yorkshire, which then passed to her son, the Earl of Northumberland. He died 28 March 1421, and was buried at Trotton. M.I.
Sir Thomas de Camoys, 1st Lord Camoys 
