he was the eldest son of George Vane-Tempest, 5th Marquess of Londonderry, by Mary Cornelia, only daughter of Sir John Edwards, 1st Baronet.
Through his daughter Lady Frances, Lord Londonderry was the great-grandfather of Winston Churchill.
Therefore she sent no plenipotentiary, but was represented by Lord Stewart, ambassador in Vienna and the half-brother of the Foreign Secretary at the time, Viscount Castlereagh.
On their return to RAE Farnborough,they were met by the Air Minister (Lord Londonderry), Under Secretary for Air (Sir Philip Sassoon) and Sir John Salmond, Marshal of the Royal Air Force.
He acted as Assistant Adjutant General to Sir Charles Stewart.
Charles Vane, 3rd Marquess of Londonderry (1778–1854), a British peer who was created Baron Stewart before inheriting the marquessate
He will give his voice and likeness to act as the infamous pirate Charles Vane in Assassin's Creed IV: Black Flag'.
Her close friends included Lady Margot Asquith, the widow of the former prime minister Herbert Henry Asquith, Lady Ethel Snowden, the wife of a former Chancellor of the Exchequer, and Lady Londonderry and her husband Charles Vane-Tempest-Stewart, 7th Marquess of Londonderry.
Charles Darwin | Charles Dickens | Charles, Prince of Wales | Ray Charles | Charles II of England | Charles I of England | Charles Lindbergh | Charles de Gaulle | Charles II | Charles | Charles I | Prince Charles | Charles V | Charles Scribner's Sons | Charles Aznavour | Charles University in Prague | Charles Stanley | Charles Bukowski | Charles Mingus | Charles Ives | Charles Bronson | Charles Babbage | Charles III of Spain | Charles Cornwallis, 1st Marquess Cornwallis | Charles Baudelaire | Charles Sanders Peirce | Charles River | Charles Manson | Charles Laughton | Charles Dutoit |
Plunket's mother, Dorothé Mabel Lewis, was the illegitimate daughter of the actress Fannie Ward and 7th Marquess of Londonderry.