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,
Chatham-Kent Chatham-Kent Chatham-Kent (2016 population 101,647) is a single-tier municipality in Southwestern Ontario, Canada. Mostly rural, its population centres are Chatham, Wallaceburg, Tilbury, Blenheim, Ridgetown, Wheatley and Dresden. The current Municipality of Chatham-Kent was created in 1998 by the merger of Kent County and its municipalities. The Chatham-Kent census division, which includes the independent Delaware Nation at Moraviantown First Nation, had a population of 102,042 in the 2016 census. The former city of Chatham began as a naval dockyard in the 1790s, as it straddles the Thames River. The town was named after the Earl of Chatham, William Pitt (the Elder).