Llywelyn ap Seisyllt, son of Seisyll ap Ednywain and Prawst verch Elise.
Born ± 980 at of Rhuddlan, Flintshire, Wales, died 1021/1023, approximately 41 years
Married ± 1010 at of, Deheubarth, Wales (approximately 11 years married) to:
Angharad verch Maredydd, daughter of Maredydd ap Owain and Mrs. Maredydd ap Owain.
Born ± 982 at Rhuddlan, Flintshire, Wales, 1st marriage to: Llywelyn ap Seisyllt, 2nd marriage to: Cynfyn ap Gwerystan
Alternate surname: Maredudd (IGI (International Genealogical Index))
Alternate birthplace: of , Deheubarth, Wales (Ancestral File)
1. King of Wales Gruffydd ap Llywelyn
Born ± 1011 at of Rhuddlan, Flintshire, Wales, died Aug 5, 1063 at Rhuddlan, Flintshire, Wales, approximately 52 years, cause of death: Murdered, buried 1063
Note: Some sources claim Nest, the above daughter of Gruffydd, married Trahaiarn ap Caradawg; however, the more reliable compilation, Eng. Pub. A (see above) v. 23, p. 307 and v. 57, p. 147, does not acknowledge such a marriage, but rather the one shown above. The pedigree shown on p. 309 of Wales Angl. 1, is considered very unreliable on this point.
Eldgyth, the above wife, was erroneously sealed to her second husband, Harold II, King of England, 20 Sept, 1931--Salt Lake Temple, and to her and him her children by Harold II, one on 16 Feb. 1932 and the other on 2 Mar. 1955--S. L.
(Family History Library archive record (family group sheet0)