He was the uncle of Harry 'Hotspur' Percy and was captured in the Battle of Shrewsbury and publicly beheaded in Shrewsbury two days later, on 23 July 1403. His head was displayed on London Bridge.
This profile is a work-in-progress. Under the developing rules on historically-significant ancestors over 300-years-old we are doing expedited merges. The final WikiTree ID is Percy-186. Do not merge this profile into any other. Merge duplicates into this profile.
Royal Ancestry by Douglas Richardson Vol. IV page 352
Collins, Arthur, and Egerton Brydges. "Percy, Duke of Northumberland." Collins's Peerage of England Genealogical, Biographical, and Historical. Vol. II. London: Printed for F.C. and J. Rivington, Otridge and Son ... [et Al., 1812. 217-366. Print.
'Henry IV: January 1404', in Parliament Rolls of Medieval England, ed. Chris Given-Wilson, Paul Brand, Seymour Phillips, Mark Ormrod, Geoffrey Martin, Anne Curry and Rosemary Horrox (Woodbridge, 2005), British History Online  [accessed 20 June 2020].
It may be possible to confirm family relationships with Thomas by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA.
Y-chromosome DNA test-takers in his direct paternal line on WikiTree: