John Erskine, Earl of Mar, KT (1675 – May 1732), Scottish Jacobite, was the eldest son of the Charles, Earl of Mar (who died in 1689), from whom he inherited estates that were heavily loaded with debt. He was the 23rd Earl of Mar in the first creation of the earldom. He was also the sixth earl in the seventh creation (of 1565). He is sometimes termed the 11th Earl of Mar, which is reckoned from the second creation (from 1426). He was nicknamed "Bobbing John", for his tendency to shift back and forth from faction to faction, whether from Tory to Whig or Hanoverian to Jacobite. Deprived of office by the new king in 1714, Mar raised the standard of rebellion against the Hanoverians; at the battle of Sheriffmuir in November 1715, Mar's forces outnumbered those of his opponent, but victory eluded him. At Fetteresso his cause was lost, and Mar fled to France, where he would spend the remainder of his life. The parliament passed a Writ of Attainder for treason against Mar in 1716, as punishment for his disloyalty, which was not lifted until 1824. He died in 1732.