Edmund Mortimer English rebel with Welsh leader Owain Glyndŵr (1376–1411) Parents Philippa, 5th Countess of Ulster Edmund Mortimer, 3rd Earl of March Children Lionel de Mortimer unknown daughter de Mortimer unknown daughter de Mortimer Siblings Elizabeth Mortimer Roger Mortimer, 4th Earl of March Philippa de Mortimer Partners Catrin ferch Owain Glyndŵr
