This pen and wash drawing depicts Scottish Jacobite John Erskine. Born at Alloa in Clackmannanshire, Erskine became a Member of Parliament in 1696 and a member of the Scottish Privy Council the following year. He was closely involved in the negotiation of the Treaty of Union with England of 1707 and later served as Secretary of State for Scotland. Erskine was known to switch support between the Tories and the Whigs, which earned him the nickname ‘Bobbing John’. After the accession of King George I in 1714 he fell from favour and became a fervent Jacobite. He headed the Jacobite rebellion of 1715, but as a result of his poor military leadership the Battle of Sherifmuir was inconclusive. Having lost his title and estates, he died in exile in France.