Hay had been sympathetic to the covenant and fought against the king at Marston Moor, but in 1648 supported the Engagement and joined the Scottish army which was defeated at Preston. He attended Charles II's coronation at Scone in 1651 and succeeded to the earldom in 1653. He then came to terms with the Cromwellian regime. After the Restoration he was a member of the Privy Council [S] 1661–74, dismissed through the influence of Lauderdale, but reinstated in 1680. He gave strong support to William and the Glorious Revolution and was raised to the marquisate in 1694. From 1692 until 1696 he was lord chancellor [S] and served as commissioner to the 1695 Parliament. In 1696 he was dismissed by William as a scapegoat for England's anger at the Darien venture.
Subjects: British History.