ap Owain, Gwynedd, Iorwerth Drwyndwn (?)

     Ap Owain, Gwynedd, Iorwerth Drwyndwn was born in Wales. Ap married Margaret of Powys (?), daughter of ap Maredudd, Maddoc Prince of Powys (?) (?) and Susanna of Gwynedd (?), in Wales.