Hij is getrouwd met Joan 'The Fair Maid of Kent' Plantagenêt.
Zij zijn getrouwd in het jaar 1346 te Kent County, England, Great Britain, hij was toen 32 jaar oud.
Kind(eren):
Earl of Kent. Had two daughters named Eleanor.
Thomas was the Earl of Kent.
BIOGRAPHY: Thomas appears to have married Joan in about 1339. However she married William Montacute the next year, although the marriage was an"ed by Pope Clement VI on 13 November 1349, at which time the original marriage to Thomas was confirmed.
Thomas was first styled Earl of Kent shortly before his death in 1360, even though his brother-in-law John had died without issue eight years earlier.
When Thomas died, his widow Joan became one of the richest women in England.