Clan Morrison is a Scottish clan. The Highland Clan Morrison is traditionally associated with the Isle of Lewis and Harris (Leòdhas) around Ness (Nis), Dun Pabbay, and Barvas (Barabhas), lands in Sutherland around Durness, and in North Uist. There are numerous Scottish clans, both Highland and Lowland, which use the surname Morison or Morrison. In 1965, the Lord Lyon King of Arms decided to recognise one man as chief of all Morrisons, whether their clans were related or not. MacGilleMhoire clan of Lewis The Morrison clan centred on the Isle of Lewis derived their surname from MhicGilleMhoire, a name said to mean "son of a servant of Mary". ("Mhic" meaning son, "Gille" meaning servant and "Mhoire" meaning Mary). In time this Gaelic surname was Anglicised as Morrison. The chiefs of the clan were the Morrisons of Habost and Barvas, and held the hereditary office of brieve. On consequence of this position the clan was also known as Clann-na Breitheamh. The Morisons held this office until 1613; and by the 19th century it was considered impossible to trace their descendants. The original spelling of the name is "Morison" with one "r", but in the early 19th century the spelling "Morrison" became popular. There are also alternative spellings, or septs, such as Gilmore. They were a numerous clan in Lewis, the population in 1861 numbered 1402, or one fifteenth of the population. These numbers indicate a domination of the island for many centuries. Besides areas around the north of the Isle of Lewis, many Morrisons traditionally live in the north-west Highlands, in the county of Sutherland around Durness (Scottish Gaelic: Diùranais), together with their traditional allies, the Clan Mackay. "Many sanguinary battles, still recounted by tradition , were fought between the Mcleods and Macaulays on one side and the Morisons on the other. At last the Morisons were forced to leave Lewis and take refuge with that part of their clan which was settled in Duirness and Edderachyllius, Sutherland, where still, in 1793, the natives were all, except a few,of the three names of Mac Leay, Morison or Mcleod." Ó Muircheasáin clan of Harris A group of the bardic Ó Muirgheasáin clan settled on the isle of Harris around 1600 under the service of the MacLeods of Harris and Dunvegan. At around this time, the file Ó Muirgheasáin replaced the bard Mac Gille Riabhaich, to the MacLeods of Harris and Dunvegan. The