Margaret Bruce sister of Robert I of Scotland (1283–1316) Parents Robert de Brus, 6th Lord of Annandale Marjorie, Countess of Carrick Children William de Carlyle John Carlyle John de Carlyle Siblings Christina Bruce Isabel Bruce Alexander de Brus Mary Bruce Isabel de Bruce Robert I of Scotland Maud Bruce Edward Bruce Nigel de Brus Elizabeth Bruce Thomas de Brus Partners Sir William de Carlyle