Helen Sandra Millicent Hart Dyke1 
From 6 January 1920, her married name became Orr.
Child of Helen Sandra Millicent Hart Dyke and Lt.-Col. Esdaile Addison Burkitt Orr
- Elizabeth Orr+2 b. 12 Oct 1923
Lt.-Col. Esdaile Addison Burkitt Orr1 
He gained the rank of Lieutenant-Colonel in the Royal Berkshire Regiment.1 He was awarded the Military Cross (M.C.)1
Child of Lt.-Col. Esdaile Addison Burkitt Orr and Helen Sandra Millicent Hart Dyke
- Elizabeth Orr+2 b. 12 Oct 1923
Elizabeth Orr1
She was educated at St. Mary’s School, Wantage, Oxfordshire, EnglandG.1 From 12 April 1947, her married name became Moon. She lived in 2003 at Old Timbers, Friday Street, Henley-on-Thames, Oxfordshire, EnglandG.1
Child of Elizabeth Orr and William Edward Penlygon Moon
- Sandra Anne Moon2 b. 28 Feb 1953
Edward Gibson Moon1
Child of Edward Gibson Moon
- William Edward Penlygon Moon+2 d. 27 Aug 1965
William Edward Penlygon Moon1 
He was registered as a Member, Institution of Civil Engineers (M.I.C.E.)1 He graduated with a Bachelor of Arts (B.A.)1
Child of William Edward Penlygon Moon and Elizabeth Orr
- Sandra Anne Moon2 b. 28 Feb 1953
Sandra Anne Moon1
She was educated at St. Mary’s School, Wantage, Oxfordshire, EnglandG.1
Vice-Admiral Henry Hart Dyke1 
He gained the rank of Vice-Admiral.1
William Covey1
Child of William Covey
- Louisa Covey2 d. 1886
Louisa Covey1 
From 10 February 1886, her married name became Hart Dyke.1
Julia Hart Dyke1 
