Rhys ap Tewdwr Mawr Prince of Deheubarth  24
- Born: Bef 1065
- Marriage: Gwladys ferch Rhiwallon 
- Died: Apr 1093
Cause of his death was Killed in Battle.
Another name for Rhys was Rhys ap Gruffydd, Lord Rhys.
Sources differ as to the wife of Rhys, therefore both are listed.
Rhys ap Tewdwr, Prince of South Wales is the son of Tewdwr Mawr, King of South Wales .
Rhys ap Tewdwr, Prince of South Wales was also known as Rhys ap Gruffydd, Lord Rhys. He gained the title of Prince Rhys of Deheubarth.2 He gained the title of Prince Rhys of South Wales.
1. Charles Mosley, editor, Burke's Peerage, Baronetage & Knightage, 107th edition, 3 volumes (Wilmington, Delaware, U.S.A.: Burke's Peerage (Genealogical Books) Ltd, 2003), volume 1, page 682. Hereinafter cited as Burke's Peerage and Baronetage, 107th edition.
2. Alison Weir, Britain's Royal Family: A Complete Genealogy (London, U.K.: The Bodley Head, 1999), page 48. Hereinafter cited as Britain's Royal Family.
3. G.E. Cokayne; with Vicary Gibbs, H.A. Doubleday, Geoffrey H. White, Duncan Warrand and Lord Howard de Walden, editors, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant, new ed., 13 volumes in 14 (1910-1959; reprint in 6 volumes, Gloucester, U.K.: Alan Sutton Publishing, 2000), volume I, page 436. Hereinafter cited as The Complete Peerage.
died at the battle of Brecon in April 1093.
Noted events in his life were:
• Acceded, 1081.
Rhys married Gwladys ferch Rhiwallon  [MRIN: 1097], daughter of Rhiwallon ap Cynfyn Lord of Glamorgan  and Unknown.