The Robertsons, who claim to be descendants of the Celtic Earls of Athol, are known as Clan Donnachaidh, Donnachaidh Reamar stout Duncan led the clan at Bannockburn in support of Robert the Bruce. In 1451 the Robertson lands were erected into the Barony of Struan. In the 16th century part of these lands were lost to the Earl of Atholl. The Robertsons supported the Jacobites and fought under Montrose and Viscount Dundee, and also in the 1715 and 1745 Risings. Alexander, 17th chief, fought in the cause of the Royal Stewarts in 1688, 1715 and 1745. There are many important branches of the clan. The surname comes from Robert "Riach", who was chief in the 15th century.
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