Marion Winkworth Hammond1 
From 25 October 1899, her married name became Williams.
Children of Marion Winkworth Hammond and Rupert Owain Glendwr Williams
- Elizabeth Marion Williams+2 b. 8 Jul 1903, d. 21 Mar 1974
- Sylvia Mary Williams2 b. 23 Aug 1905, d. 17 Jun 1976
Elizabeth Marion Williams1 
From 4 January 1928, her married name became de Watteville.
Children of Elizabeth Marion Williams and Baron Fernand André de Watteville
- Elizabeth-Anne de Watteville+2 b. 14 Aug 1929
- Colonel Jean-Jacques Oscar de Watteville+2 b. 25 Apr 1931, d. 7 Jan 2001
- Hélène Antoinette de Watteville+2 b. 20 Jul 1939
Baron Oscar de Watteville1
Child of Baron Oscar de Watteville
- Baron Fernand André de Watteville+2 d. 6 Aug 1990
Baron Fernand André de Watteville1 
Children of Baron Fernand André de Watteville and Elizabeth Marion Williams
- Elizabeth-Anne de Watteville+2 b. 14 Aug 1929
- Colonel Jean-Jacques Oscar de Watteville+2 b. 25 Apr 1931, d. 7 Jan 2001
- Hélène Antoinette de Watteville+2 b. 20 Jul 1939
Colonel Jean-Jacques Oscar de Watteville1 
He gained the rank of Colonel in the Swiss Army.1
Children of Colonel Jean-Jacques Oscar de Watteville and Laure de Sépibus
- Christian de Watteville2 b. 22 Sep 1971
- Patricia Laurence de Watteville2 b. 5 Jun 1973
Laure de Sépibus1
From 5 November 1970, her married name became de Watteville. She lived in 2003 at Chemin du Château 11, Crissier, Vaud, Switzerland.1
Children of Laure de Sépibus and Colonel Jean-Jacques Oscar de Watteville
- Christian de Watteville2 b. 22 Sep 1971
- Patricia Laurence de Watteville2 b. 5 Jun 1973
Christian de Watteville1
Patricia Laurence de Watteville1
Elizabeth-Anne de Watteville1
From 23 July 1953, her married name became Marendaz. She lived in 2003 at 1 Ave Victor Ruffy 1, Lausanne, Vaud, Switzerland.1
Children of Elizabeth-Anne de Watteville and Jean-Pierre Arnold Edmund Marendaz
- Thierry Pierre Marendaz+2 b. 1 Jun 1954
- Chantal Elisabeth Marendaz+2 b. 28 Feb 1956
