Clan Malcolm or Maccallum of Scotland. Derived from ‘Mac Ghille Chaluim’, ‘son of the desciple of Columba’. They settled in Lorn in the thirteenth century. Ronald Maccallum of Corbarron was constable of Craignish Castle in 1414. Donald McGillespie Vich O’Challum, received a charter of the lands of Poltalloch in the parish of Kilmartin in Argyll from Duncan Campbell of Duntrune in May 1562. The Reverend Archibald Maccallum, translator of parts of the bible into Gaelic, succeeded his cousin as the fourth Laird of Poltalloch in 1642. His son, Zachary, the fifth of Poltalloch, also succeeded to the estates of Corbarron, which were left to him by a kinsman.
Arms: Argent, on a saltire azure, between four stags’ heads erased gules, five mullets or (Malcolm of Poltalloch).
Crest: A tower argent, window and port azure.
Motto: In ardua tendit (He has attempted difficult things).