Vane-Tempest, Frances Anne, Marchioness of Londonderry -1865)
Frances Anne Emily Vane Tempest was the only daughter and heir of Sir Henry Vane Tempest, 2nd Bar0net of Long Newton in County Durham, and Anne Catharine McDonnell, eldest daughter of the 1st Marquess and 6th Earl of Antrim. She married 3 April 1819, as his second wife, Charles William Stewart, second surviving son of the Marquess of Londonderry, and he took the name and arms of Vane in place of those of Stewart. An able soldier and diplomatist he had been one of Wellington's ablest generals during the Peninsular War. He was created Baron Stewart of Stewart's Court and of Ballylawn in County Donegal on 1 July 1814. In 1822, he succeeded his elder brother, better known as Viscount Castlereagh, the eminent statesman, as 3rd Marquess of Londonderry. On the 8 July 1823 he was created Viscount Seaham, of County Durham, and Earl Vane, with remainder to the heirs male of the body by his second wife. In 1851, his eldest son by his second wife, then the 2nd Earl Vane, and afterwards the 5th Marquess of Londonderry, took the additional name and arms of Tempest.