Edgar Montagu1 
He was a practising barrister.1
Children of Edgar Montagu and Marianne Henrietta Mackenzie
- Ernest Edgar Montagu2 b. 17 Aug 1849, d. 11 Aug 1875
- Cecil Edgar Montagu+2 b. 2 Jul 1851, d. 4 Aug 1923
Major George Mackenzie1
Child of Major George Mackenzie
- Marianne Henrietta Mackenzie+2 d. 1873
Marianne Henrietta Mackenzie1 
From 8 April 1847, her married name became Montagu.
Children of Marianne Henrietta Mackenzie and Edgar Montagu
- Ernest Edgar Montagu2 b. 17 Aug 1849, d. 11 Aug 1875
- Cecil Edgar Montagu+2 b. 2 Jul 1851, d. 4 Aug 1923
Ernest Edgar Montagu1 
Cecil Edgar Montagu1 
He gained the rank of Captain in the 21st Hussars.1
Children of Cecil Edgar Montagu and Alice Ethel Critchley
- Sydney Eleanor Montagu2 b. 29 Dec 1884, d. 6 Jan 1942
- Major James Gerard Edgar Drogo Montagu+2 b. 5 Jan 1893, d. 26 Apr 1978
John Asheton Critchley1
Children of John Asheton Critchley
- Major Edward Ashton Critchley+
- Alice Ethel Critchley+2 d. 1 Dec 1919
Alice Ethel Critchley1 
From 11 September 1883, her married name became Montagu.
Children of Alice Ethel Critchley and Cecil Edgar Montagu
- Sydney Eleanor Montagu2 b. 29 Dec 1884, d. 6 Jan 1942
- Major James Gerard Edgar Drogo Montagu+2 b. 5 Jan 1893, d. 26 Apr 1978
Major James Gerard Edgar Drogo Montagu1 
He was educated at Eton College, Windsor, Berkshire, EnglandG.1 He was educated at Trinity College, Cambridge University, Cambridge, Cambridgeshire, EnglandG.1 He fought in the First World War.1 He gained the rank of Major in the Reserve of Officers, Royal Artillery.1
Child of Major James Gerard Edgar Drogo Montagu and Anne Gladys Ross-Skinner
- Lt.-Cdr. William Gerard Drogo Montagu+2 b. 22 Feb 1921, d. 1991
Sir Harry Ross-Skinner1
Children of Sir Harry Ross-Skinner
- William Milne Ross-Skinner+2
- Anne Gladys Ross-Skinner+2
- Lt.-Col. Harry Crawley Ross-Skinner+3 b. 1896, d. 30 Sep 1972
Anne Gladys Ross-Skinner1
From 30 July 1919, her married name became Montagu.1
Child of Anne Gladys Ross-Skinner and Major James Gerard Edgar Drogo Montagu
- Lt.-Cdr. William Gerard Drogo Montagu+2 b. 22 Feb 1921, d. 1991
