Abraham Creighton, 2nd Earl Erne

Abraham Creighton, born in 1762, was the elder son of John, first Earl by his first wife, Catherine Howard. In November 1798 Abraham was declared insane. He was then incarcerated in Brooke House, London, for the next fifty years. On his father's death in 1828 Abraham became the second Earl, although still incarcerated and officially insane. He died in 1848, within months of the death of his father's second wife, Mary Hervey, daughter of Frederick Hervey, Earl of Bristol and Bishop of Derry. He was officially unmarried and without descendants. The title and the estates including Crom Castle passed to his nephew John Creighton, the third Earl. The third Earl subsequently changed the spelling of the family name to Crichton, which spelling is maintained to this day by the Earl of Erne.