Marguerite III d’Avesnes, Comtesse de Hainaut et Gravin van Holland en Zeeland1 
She succeeded as the Gravin van Holland en Zeeland in 1345.1 She succeeded as the Comtesse de Hainaut in 1345.1 She abdicated as Countess of Holland in 1354.1
Children of Marguerite III d’Avesnes, Comtesse de Hainaut et Gravin van Holland en Zeeland and Ludwig IV von Bayern, Holy Roman Emperor
- Wilhelm III Herzog von Bayern-Straubing Comte de Hainaut et Graaf van Holland en Zeeland1 b. 12 May 1330, d. 15 Apr 1389
- Albrecht I Herzog von Bayern-Straubing Comte de Hainaut et Graaf van Holland en Zeeland+ b. 25 Jul 1336, d. 12 Dec 1404
- [S38] John Morby, Dynasties of the World: a chronological and genealogical handbook (Oxford, Oxfordshire, U.K.: Oxford University Press, 1989), page 91. Hereinafter cited as Dynasties of the World.
- [S3268] Hans Harmsen, “re: Chester Family,” e-mail message to BENR, 21 August 2008. Hereinafter cited as “re: Chester Family.”
Emily Lyon-Dalberg-Acton1
- [S8] BP1999 volume 1, page 30. See link for full details for this source. Hereinafter cited as. [S8]
Isabella d’Avesnes1 
Rachel Lampard1
From June 1986, her married name became Marffy.1
Children of Rachel Lampard and Denes de Marffy von Versegh
- Edmond de Marffy von Versegh1 b. Feb 1988
- Hannah de Marffy von Versegh1 b. Sep 1989
- Henry John de Marffy von Versegh1 b. Sep 1991
- George de Marffy von Versegh1 b. Jun 1994
- [S8] BP1999 volume 1, page 30. See link for full details for this source. Hereinafter cited as. [S8]
Edmond de Marffy von Versegh1
- [S8] BP1999 volume 1, page 30. See link for full details for this source. Hereinafter cited as. [S8]
Henry John de Marffy von Versegh1
- [S8] BP1999 volume 1, page 30. See link for full details for this source. Hereinafter cited as. [S8]
George de Marffy von Versegh1
- [S8] BP1999 volume 1, page 30. See link for full details for this source. Hereinafter cited as. [S8]
Hannah de Marffy von Versegh1
- [S8] BP1999 volume 1, page 30. See link for full details for this source. Hereinafter cited as. [S8]
Vibeke Jane Culley1
From April 1986, her married name became de Marffy von Versegh.1
Children of Vibeke Jane Culley and Miklos de Marffy von Versegh
- Lucinda de Marffy von Versegh1 b. Jan 1988
- Alice de Marffy von Versegh1 b. Mar 1990
- Benjamin de Marffy von Versegh1 b. May 1992
- Hugh de Marffy von Versegh1 b. Feb 1997
- Simon Marffy von Versegh2 b. Jun 2002
