(Research) KINSHIP: Conflict/Error> Dwnn's 'Heraldic Visitations of Wales' volume 1 page 94 calls him Dafydd ap Gruffudd ap Rhys ap Llywelyn "Fychan" ap Llywelyn ap Hywel ap [omits a generation called Caradog ap] Trahaearn ap Cydifor ap [reverses the next two generation reading Gwyn ap Gwilym instead of Gwilym ap Gwyn ap] [the omits the generation of Rhydderch ap] Elgan.
(Research) KINSHIP: Conflict/Error> Thomas' 'Golden Grove MS' book 7 page D860 incorrectly links him to a wrongly identified Rhys ap Aron.