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 Pitt, 2nd Earl of Chatham an amphibious assault aimed at destroying the French fleet and fortifications around Antwerp and the island of Walcheren. Chatham commanded the largest expeditionary force Britain had yet fielded in the war. Despite early success in taking the town of Flushing, the campaign was an unmitigated disaster. The army made slow headway and the French immediately withdrew their fleet to Antwerp, a tactic that should have been foreseen by the politicians, admirals and generals planning the campaign from the start. While Chatham quarrelled with the naval commander, Sir Richard Strachan, as many as 8000 British troops succumbed to malaria. Chatham was