Catrin ferch Owain Glyndŵr daughter of Owain Glyndŵr (1350–1413) Parents Margaret Hanmer Owain Glyndŵr Children Lionel de Mortimer unknown daughter de Mortimer unknown daughter de Mortimer Siblings Gwenllian ferch Owain Glyndŵr Maredudd ab Owain Glyndŵr Gruffudd ab Owain Glyndŵr Alys ferch Owain Glyndŵr Janet Glendower Ieuan ap Dafydd Dymock, of Penley Ieuan ab Owain Glyndŵr Partners Edmund Mortimer