The Right Honourable Henry David Reginald Margesson, 1st Viscount Margesson, M.P.
- Born: 26 July 1890
- Died: 24 December 1965
- 1890-1922: Mr. David Margesson
- 1922-1923: Mr. David Margesson, M.P.
- 1923-1924: Mr. David Margesson
- 1924-1933: Mr. David Margesson, M.P.
- 1933-1942: The Rt. Hon. David Margesson, M.P.
- 1942-1965: The Viscount Margesson, P.C.
- Junior Lord of the Treasury, 1926-1929, 1931
- Parliamentary Secretary to the Treasury, 1931-1940
- Secretary of State for War, 1940-1942
- Viscount Margesson, 1942
- Privy Councillor, 1933
- Conservative Assistant Whip, 1924-1926
- Conservative Whip, 1926-1931
- Conservative Chief Whip, 1931-1940
|Secretary of State for War|
Sir P. J. Grigg