(Research) KINSHIP: Investigate> Bartrum's 'Welsh Genealogies 300-1400' volume 2 page 28 states he is either the son of 1) Einion ap Llywelyn ap Rhirid ap Bleddyn (*), or 2) Einion ab Owain ap Cadwgon ap Bleddyn (*).
(Research) MARRIAGE: Conflict/Error> Bartrum's 'Welsh Genealogies 300-1400' volume 2 page 82 states "marriages are probably fictitious".