Winifred Mary Cayzer1
From 13 April 1917, her married name became O’Neill.
Children of Winifred Mary Cayzer and Rear-Admiral Neil O’Neill
Major Edward Armstrong O’Neill1
Child of Major Edward Armstrong O’Neill
Rear-Admiral Neil O’Neill1
Children of Rear-Admiral Neil O’Neill and Winifred Mary Cayzer
Estelle Agnes Cayzer1
From 15 September 1923, her married name became Marr.
Children of Estelle Agnes Cayzer and Captain Philip George Marr
Alexander Marr1
Child of Alexander Marr
- Captain Philip George Marr+2 d. 13 Feb 1966
Captain Philip George Marr1 
He gained the rank of Captain in the Royal Flying Corps.1 He gained the rank of Captain in 1918 in the Royal Air Force.1
Children of Captain Philip George Marr and Estelle Agnes Cayzer
Iris Cecilie Cayzer1
From 26 September 1938, her married name became McKellar. She lived in 2003 at 14 Victoria Court, Grand Avenue, Hove, Sussex, EnglandG.1
Child of Iris Cecilie Cayzer and Duncan Alistair McKellar
- Heather Joy McKellar+2 b. 7 Nov 1943, d. 1989
Alexander McKay McKellar1,2
Child of Alexander McKay McKellar and Agnes Dougan
- Duncan Alistair McKellar+3 b. 17 Jun 1900, d. 26 Sep 1969
Duncan Alistair McKellar1 
He was a dance instructor.2
Child of Duncan Alistair McKellar and Iris Cecilie Cayzer
- Heather Joy McKellar+3 b. 7 Nov 1943, d. 1989
Heather Joy McKellar1 
From 17 July 1965, her married name became Hyman. From 1975, her married name became Temple. She lived before 1989 at Flat 1, Little Silver, Marsham Way, Gerrard’s Cross, Buckinghamshire, EnglandG.1
Children of Heather Joy McKellar and Kenneth Leonard Hyman
- Jeanne Cecile Hyman2 b. 5 Nov 1966
- Tara Penelope Hyman2 b. 15 Nov 1968