Mary Patricia Cautley1 
From 25 April 1916, her married name became Mordaunt.
Children of Mary Patricia Cautley and Christopher John Mordaunt
- Guy Michael Mordaunt2 b. 2 Mar 1917, d. 23 Jan 1945
- Katherine Patricia Mordaunt+2 b. 27 Nov 1918
- Barry Stephen Clare Mordaunt+2 b. 13 May 1925, d. 23 Jul 1998
Guy Michael Mordaunt1 
He fought in the Second World War, in Royal Air Force Volunteer Reserve.1
Katherine Patricia Mordaunt1
From 21 March 1950, her married name became Isard. She lived in 2003 at 36 Brandy Hole Lane, Chichester, Sussex, England.1
Child of Katherine Patricia Mordaunt and David Isard
- John David Isard2 b. 6 Nov 1951
Jean Isard1
Child of Jean Isard
- David Isard+2 d. 1980
David Isard1 
Child of David Isard and Katherine Patricia Mordaunt
- John David Isard2 b. 6 Nov 1951
John David Isard1
He was educated at Cranleigh School, Cranleigh, Surrey, England.1 He was educated at Leicester University, Leicester, Leicestershire, England.1
Barry Stephen Clare Mordaunt1 
He was a Master Mariner.1 He was Captain with P&O.1
Children of Barry Stephen Clare Mordaunt and Joan Poppleton
- Guy Roger Mordaunt+2 b. 21 Feb 1952
- Ann Patricia Mordaunt+2 b. 28 Jan 1956
Louis Henry Poppleton1
Child of Louis Henry Poppleton
Joan Poppleton1
From 18 February 1950, her married name became Mordaunt.
Children of Joan Poppleton and Barry Stephen Clare Mordaunt
- Guy Roger Mordaunt+2 b. 21 Feb 1952
- Ann Patricia Mordaunt+2 b. 28 Jan 1956
Guy Roger Mordaunt1
He was educated at Grenville College, Bideford, Devon, England.1
Children of Guy Roger Mordaunt and Deborah Anne Norton
- Sally Jane Mordaunt2 b. 1985
- Simon Richard Stephen Mordaunt2 b. 1988
- Elizabeth Muriel Mordaunt2 b. 1990
