Gruffydd ap Llewelyn

M, (circa 1011 - 5 August 1063)
Father-Biological*Llywelyn ap Seisyllt d. 1023
Mother-Biological*Angharad verch Maredydd
Family Lines
Roy Line

Boudreau Line
Last Edited=1 Nov 2023
     Gruffydd ap Llewelyn was born circa 1011. He was the son of Llywelyn ap Seisyllt and Angharad verch Maredydd.

Gruffydd ap Llewelyn married Ealdgyth of Mercia, daughter of Alfgar ~ Earldorman of East Anglia and Elfleda, circa 1058.1,2,3 Gruffydd ap Llewelyn died on 5 August 1063.

Child of Gruffydd ap Llewelyn and Ealdgyth of Mercia


  1. Searle, William George. Anglo-Saxon Bishops, Kings and Nobles. Cambridge, UK: Cambridge University Press, 1899.
  2. Stuart, Roderick W. Royalty for Commoners, The Complete Known Lineage of John of Gaunt, Son of Edward III, King of England, and Queen Philippa, Fourth Edition. Baltimore, Maryland: Genealogical Publishing Company, 2002.
  3. Weir, Alison. Britain's Royal Families. London: Vintage Books, 1989.