Roger Mortimer Peerage person ID=405453 (b. 1350) Parents Roger Mortimer, 1st Earl of March Joan de Geneville, 2nd Baroness Geneville Children Siblings Maud Mortimer Joan Mortimer Beatrice Mortimer Edmund Mortimer Geoffrey Mortimer John Mortimer Katherine Mortimer, Countess of Warwick Agnes Mortimer, Countess of Pembroke Elinor ferch Roger Mortimer Blanche Mortimer Isabella Mortimer Margaret Mortimer Partners Joan Butler