 In 2002, the first chief of Clan Arthur (James Macarthur) was recognised in about 230 years.During the reign of Alexander III (r.1249-1286), the Clan Campbell made its first appearance, and was divided into two branches; "Mac Cailinmor" and "Mac Arthur".The nineteenth century historian William F. Skene wrote that during the reign of Robert I (r.1306–1329), the "Mac Cailinmor" branch (descendants of Colin "Mor" Campbell) did not possess any land in what is now Argyll, while Mac Arthur, head of the "Mac Arthur" branch was in possession of extensive territory in the earldom Garmoran, which was the original seat of the Campbells.