Mary Bruce1282 - 1323 Born 1282 Died 1323 Details Parents Mary Bruce Lived 41 years father Robert de Brus 1243 - 1304 mother Marjorie of Carrick 1253 - 1292 Siblings Sister Isabel Bruce 1272 - 1358 Brother Robert I 1274 - 1329 Sister Christina Bruce 1278 - 1356 Brother Nigel de Brus 1279 - 1306 Brother Edward Bruce 1280 - 1318 Sister Margaret Bruce 1283 - 1320 Brother Thomas de Brus 1284 - 1307 Brother Alexander de Brus 1285 - 1307 Sister Elizabeth Bruce 1286 - 1320 Sister Margery Bruce 1287 - 1315