Joan de Geneville, 2nd Baroness Geneville daughter of Sir Piers de Geneville and Joan of Lusignan (1286–1356) Parents Joan of Lusignan Pierre de Joinville Children Elinor ferch Roger Mortimer Beatrice Mortimer Roger Mortimer John Mortimer Blanche Mortimer Margaret Mortimer Agnes Mortimer, Countess of Pembroke Joan Mortimer Edmund Mortimer Maud Mortimer Isabella Mortimer Geoffrey Mortimer Katherine Mortimer, Countess of Warwick Siblings Isabelle, Dame d'Albret Mathe, Dame d'Albret Beatrix de Genevile Matilda de Genevile Partners Roger Mortimer, 1st Earl of March