He appears in four charters in the Book of Llandaff during the episcopate of Bishops Euddogwy and Inabwy .
Gwrgan probably fled Ergyng when his inheritance was seized by Gwrfoddw Hen .
Gwrgan appears in four charters in the Book of Llandaff during the episcopate of Bishops Euddogwy and Inabwy .
Gwrgan probably fled Ergyng when his inheritance was seized by Gwrfoddw Hen .