Margaret FitzAlan Baroness Ros b. c. 1388 (1370–1438) Parents Eleanor Maltravers, 2nd Baroness Maltravers John FitzAlan, 1st Baron Arundel Children William de Ros Alice de Ros Thomas de Ros, 8th Baron de Ros John de Ros, 7th Baron de Ros Elizabeth de Ros Sir Robert de Ros Margaret de Ros Sir Richard de Ros Beatrice de Ros Siblings Richard FitzAlan John de Cobham Joan Fitzalan John FitzAlan, 2nd Baron Arundel Reynold Cobham William Arundel Partners William de Ros, 6th Baron de Ros