Marared´s parentage and marriage are recorded in a manuscript now at Jesus College "Marareda merch Madawc m Maredud". 1
Marriage Information:
Marared married Iorwerth "Drynndwn" ab Owain, Prince of Gwynedd, son of Owain ap Gruffydd, King of Gwynedd and Gwladus ferch Llywarch. (Iorwerth "Drynndwn" ab Owain died in 1174.)
Sources
1 Foundation for Medieval Genealogy, Medlands: Marared.