Clan MacThomas is a Highland Scottish clan and is a member of the Clan Chattan Confederation. The progenitor of the Clan MacThomas was Thomas, who was a Scottish Gaelic speaking Highlander. He was known as Tomaidh Mòr and it is from him that the clan takes its name. He was a grandson of William Mackintosh, 7th chief of Clan Mackintosh and 8th chief of the Chattan Confederation.
