He was the second son of William Annesley, 1st Viscount Glerawly, and Lady Anne Beresford. He inherited the earldom created for his childless brother through the terms of the special remainder, as well as the viscountcy which had been created for his father, in 1802.
He was the second son of William Annesley, 1st Viscount Glerawly, and Lady Anne Beresford. He inherited the title created for his childless sibling through a special clause, as well as the viscountcy that had been established for his father in 1802.