Evan Morton Mansel-Pleydell1 
He gained the rank of Lieutenant in the Royal Horse Artillery.1
Harry Percy Morton Mansel-Pleydell1 
He gained the rank of Major in the Royal Field Artillery.1 He fought in the First World War, where he was mentioned in despatches.1 He was appointed Officer, Order of the British Empire (O.B.E.) in 1921.1
Jessica Gertrude Gerrard1
From 6 February 1931, her married name became Mansel-Pleydell.
Ralph Morton Mansel-Pleydell1 
He fought in the First World War, where he was mentioned in despatches twice.1 He gained the rank of Captain in the Royal Field Artillery.1
Children of Ralph Morton Mansel-Pleydell and Countess Marguerite Marie Louise Barbe Ghislaine d‘Ursel
- John Aymard Morton Mansel-Pleydell2 b. 22 Nov 1920, d. 17 Nov 1940
- Lt.-Cdr. Philip Morton Mansel-Pleydell+2 b. 16 Feb 1922, d. 15 Aug 1999
- David Gabriel Morton Mansel-Pleydell+2 b. 26 Mar 1923, d. 6 Jan 1973
Count Aymard d’Ursel1
Child of Count Aymard d’Ursel
- Countess Marguerite Marie Louise Barbe Ghislaine d‘Ursel+2 d. 4 Oct 1968
Countess Marguerite Marie Louise Barbe Ghislaine d’Ursel1 
From 11 February 1920, her married name became Mansel-Pleydell.
Children of Countess Marguerite Marie Louise Barbe Ghislaine d’Ursel and Ralph Morton Mansel-Pleydell
- John Aymard Morton Mansel-Pleydell2 b. 22 Nov 1920, d. 17 Nov 1940
- Lt.-Cdr. Philip Morton Mansel-Pleydell+2 b. 16 Feb 1922, d. 15 Aug 1999
- David Gabriel Morton Mansel-Pleydell+2 b. 26 Mar 1923, d. 6 Jan 1973
John Aymard Morton Mansel-Pleydell1

He was educated at Ampleforth College, Ampleforth, Yorkshire, EnglandG.1 He fought in the Second World War.1 He gained the rank of 2nd Lieutenant in the Leicestershire Regiment.1
Lt.-Cdr. Philip Morton Mansel-Pleydell1 
He was educated at Ampleforth College, Ampleforth, Yorkshire, EnglandG.1 He fought in the Second World War.1 He gained the rank of Lieutenant-Commander (E) in the Royal Navy.1 He fought in the Korean War in 1951.1
Children of Lt.-Cdr. Philip Morton Mansel-Pleydell and Dagmar Rosalie Bowring
- John Bowring Morton Mansel-Pleydell+2 b. 2 Nov 1963
- Rosanna Vivien Mansel-Pleydell+2 b. 19 Feb 1965
Theodore Louis Bowring1
Child of Theodore Louis Bowring
- Dagmar Rosalie Bowring+2 b. c 1932, d. 14 Jun 2021