John Campbell, Earl of Atholl John Campbell, Earl of Atholl John Campbell, Earl of Atholl (died 1333) was a Scottish nobleman. John was the son of Sir Neil Campbell by his wife Mary Bruce. His grandparents were Sir Cailean Mór Campbell, Afraig of Carrick, Robert de Brus, 6th Lord of Annandale and Marjorie, Countess of Carrick. In 1316 he inherited from his father the lands confiscated from David Strathbogie, and in about 1320 he was created Earl of Atholl, though Strathbogie's son also claimed the title. He was married to Joan, former wife of Malise IV, Earl of Strathearn and daughter of Sir John de
Edward Seymour, 1st Earl of Hertford to rely on Sir John Thynne for some financial support. Under Queen Mary he was "restored in blood", but was not given back his title; Queen Elizabeth I created him Earl of Hertford, in the earldom's second creation, in 1559. Between April and May 1605 following the Treaty of London (1604) he was sent on an Embassy by King James I to Albert VII, Archduke of Austria, sovereign of the Spanish Netherlands between 1598 and 1621, at Brussels, to receive his oath of peace. His first wife, Lady Catherine Grey, was a potential claimant to Elizabeth's throne, and law established