Maredudd ab Owain Glyndŵr Participant in the revolt raised by Glyndŵr in Wales (1301–1401) Parents Margaret Hanmer Owain Glyndŵr Children Siblings Gwenllian ferch 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