Isabella of Scotland1426 - 1494 Born 1426 Died Sat, 13 October 1494 Details Parents Duchess of Brittany Isabella Stewart Lived 68 years, 3 months, 12 days father James I 1394 - 1437 mother Joan Beaufort 1404 - 1445 Siblings Sister Marguerite d'Écosse 1424 - 1445 Sister Mary Stewart 1427 - 1465 Sister Joan Stewart 1428 - 1493 Brother James II 1430 - 1460 Brother Alexander Stewart 1430 Sister Eleanor of Scotland 1433 - 1480 Sister Annabella of Scotland 1436 - 1509