Earl of Londonderry extinct on the death of his great-grandson, the fourth Earl, in 1714. The second creation came in 1726 in favour of the soldier and politician Thomas Pitt, 1st Baron Londonderry. He had already been created Baron Londonderry in 1719 and was made Viscount Gallen-Ridgeway at the same time as he was granted the earldom, also in the Peerage of Ireland. He was the husband of Lady Frances Ridgeway, daughter and heiress of the fourth Earl of the first creation. A member of the prominent Pitt family, he was the uncle of William Pitt, 1st Earl of Chatham. His younger son,
John Butler, 15th Earl of Ormonde John Butler, 15th Earl of Ormonde John Butler, 15th Earl of Ormonde and 8th Earl of Ossory ("de jure") was born before 1744 and died on 24 June 1766. He was the son of Thomas Butler of Garryricken and Lady Margaret Burke who was the daughter of William Burke, 7th Earl of Clanricarde. Upon the death of Charles Butler (14th Earl of Ormonde), his only surviving sister, Lady Elizabeth Butler inherited her brother's estate in 1760. Lady Elizabeth was the daughter of Thomas Butler, 6th Earl of Ossory. John Butler succeeded his cousin as Earl of Ormonde, but he did