Allan (1832-1905) was the son of Allan Bàn MacLeod and Rebecca MacLeod of Sheabie. In about 1854 he moved with his widowed mother to 2 Urgha, where in 1861 he was noted as working as a domestic servant. By 1871 he had returned to Berneray, living with his brother Alexander’s household on 15 Ruisgarry (Trealigarry), working as a fisherman and then a farm servant. Allan did not marry.

Allan Beag was remembered in two sound recordings from 1974, made by his great nephew Angus MacKillop, as a strong and quick-witted fellow. The two recordings are Naideachd mu Ailean Beag à Beàrnaraigh and  Naidheachdan beaga mu chàirdean an fhiosraiche...