Robert de Brus, 5th Lord of Annandale Regent of Scotland and competitor for the Scottish throne (1210–1295) Parents Isobel of Huntingdon Robert de Brus, 4th Lord of Annandale Children Euphemia Bruce William de Brus Robert de Brus, 6th Lord of Annandale John de Brus Richard de Brus Isabel de Bruce Siblings Beatrice de Brewes Bernard Bruce, Lord of Connington and Exton Partners Isabella of Gloucester and Hertford Christina de Ireby