Earl of Loudoun Earl of Loudoun Earl of Loudoun (pronounced ), named after Loudoun in Ayrshire, is a title in the Peerage of Scotland. It was created in 1633 for John Campbell, 2nd Lord Campbell of Loudoun, along with the subsidiary title Lord Tarrinzean and Mauchline. The 1st Earl's wife Margaret was the granddaughter and heiress of Hugh Campbell, who had been created Lord Campbell of Loudoun; he resigned the peerage in favour of his grandson-in-law, who was later created an earl. The 6th Countess married the 2nd Earl of Moira, who was later created Marquess of Hastings. The next three Earls also
Earl of Birkenhead of Northampton, at the same time as he was given the earldom. The three peerages, like the earldom, were in the Peerage of the United Kingdom. Viscount Furneaux was used as the courtesy title by the heir apparent to the earldom; the title of this viscountcy derived from the maiden name of Lord Birkenhead's wife. He was succeeded by his only son, the second Earl. He was also a Conservative politician and held minor office under Neville Chamberlain and Winston Churchill. However, Lord Birkenhead is best remembered as a biographer. He was succeeded by his only son, the third Earl.