EPITHET: "Ddiriaid" (unlucky). (Evans, British Genealogist, book 8 p. H54)
(Research) KINSHIP: Investigate> Bartrum's 'Welsh Genealogies 300-1400' volume 10 page 783 does not state to which wife he belongs.
(Research) KINSHIP: Investigate> Evans' 'British Genealogist' book 8 page H77 makes him the son of Joan [de Clare].