Heirs and successors thumb|150px|right|There is no evidence Owain used a coat of arms during his life, but later antiquarians retroactively attributed to Owain Gwynedd the blazon: Vert, three eagles displayed in fess Or.
Heirs and s!uccessors thumb|150px|right|There is no evidence Owain used a coat of arms during his life, but later antiqu.arians retroactively attributed to Owain Gwynedd the blazon: Vert, three eagles displayed in fess Or.