Sie war verwandt mit Philip ab Ifor.
Kind(er):
Catherine, dau. of Llewellyn/Leoline ap Gryffyth, prince of North Wales, and his wife, Lady Eleanor, dau. of Simon de Montfort; m. Philip ap Yevor; mother of Eleanor. [Magna Charta Barons, p. 416]
WAITE LINE
Gwenllian, only child of Llywelyn II and Elinor de Montfort. [A History of Wales, p. 158]
Following the revolt of 1282/3, she was sent to the nunnery of Sempringham where she died in 1337. [A History of Wales, p. 164]
This source says Catherine has a sister, Gwenllian, who is the nun of Sempringham. Dau. of Eleanor de Montfort and Llewellyn ap Griffith; m. Philip ap Ivor; mother of Eleanor Goch who m. Thomas ap Llewellyn. [Ancestral Roots, Line 260, p. 234]