Following the death of his father in 1805, he became the 10th Chief of Clan Tearlach and inherited the position of
Heritable Usher of the White Rod for Scotland, selling the title to Sir Patrick Walker in 1806. In 1794, he had married Agnes Margaret, the daughter of one of the most distinguished surgeons and scientists of his day,
John Hunter, for whom the
Hunterian Society of
London is named. Agnes' mother,
Anne (Home) Hunter, daughter of Robert Boyne Home of Greenlaw Castle,
Berwickshire, and the sister of Sir
Everard Home, 1st Bt., of Well Manor,
Southampton. She was described by the author
Fanny Burney as "extremely pretty and reckoned very ingenious". Some of the poems of Agnes' mother, Anne Home were used to the music of
Joseph Haydn. Campbell was very close to his mother-in-law,
Anne Hunter, and provided her with a small annuity. As such, Mrs Hunter was greatly saddened and disappointed in her daughter when she separated from Campbell. Campbell died without issue 5 June 1819, and is buried with his own monument at
Westminster Abbey, near to his distinguished uncle
General Sir Archibald Campbell. After his death his
baronetcy became extinct and the Inverneill estate was passed to his brothers, the 4th and 5th lairds of Inverneill. ==See also==