Background
He was the son of William Kerr, 2nd Marquess of Lothian and Lady Jean Campbell.
He was the son of William Kerr, 2nd Marquess of Lothian and Lady Jean Campbell.
Although his title of Lord Jedburgh is generally regarded as a courtesy title, he voted at the election of Scots representative peers under that name in 1712. They had three children:
Lord Robert Kerr (d 1746), killed at the Battle of Culloden
William Henry Kerr, 4th Marquess of Lothian (1710–1775)
Lady Jane Kerr, died young
He succeeded to the Marquessate of Lothian in 1722 and was elected a representative peer in 1731, sitting in the House of Lords until 1761. From 1739 until his resignation in 1756, he was Lord Clerk Register.