Ieuan ap Dafydd Dymock, of Penley Parents Margaret Hanmer Children Siblings Gwenllian ferch Owain Glyndŵr Janet Glendower Maredudd ab Owain Glyndŵr Catrin ferch Owain Glyndŵr Alys ferch Owain Glyndŵr Gruffudd ab Owain Glyndŵr