Terence Conyngham Plunket, 6th Baron Plunket (12 July 1899 – 24 February 1938) was the son of William Lee Plunket, 5th Baron Plunket of Newton and Lady Victoria Alexandrina Hamilton-Temple-Blackwood. He became 6th Baron Plunket of Newtown on the death of his father on 24 January 1920. On 4 December 1922, he married Dorothé Mabel Barnato (née Lewis), widow of Captain Jack Barnato and the illegitimate daughter of actress Fannie Ward and Charles Vane-Tempest-Stewart, 7th Marquess of Londonderry. Lord and Lady Plunket had three sons: