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