Avice (?)1 
Her married name became de Cobham.1
Child of Avice (?) and Stephen de Cobham, 1st Lord Cobham (of Runham)
- John de Cobham, 2nd Lord Cobham (of Runham)+1 b. 1319, d. 14 Sep 1362
- [S6] G.E. Cokayne; with Vicary Gibbs, H.A. Doubleday, Geoffrey H. White, Duncan Warrand and Lord Howard de Walden, editors, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant, new ed., 13 volumes in 14 (1910-1959; reprint in 6 volumes, Gloucester, U.K.: Alan Sutton Publishing, 2000), volume III, page 352. Hereinafter cited as The Complete Peerage.
Barbara Ann Blackburn1
She was adopted by James David Vincent Blackburn and Bridget Mary Collett.1 From 31 May 1997, her married name became Sadowski.
Children of Barbara Ann Blackburn and Thomas Vincent Sadowski
- Lydia M. Sadowski2 b. 1998
- Alessa Beatrice Sadowski2 b. 8 Mar 2001
Frank Sadowski, Jr.1
Child of Frank Sadowski, Jr.
Thomas Vincent Sadowski1
Children of Thomas Vincent Sadowski and Barbara Ann Blackburn
- Lydia M. Sadowski2 b. 1998
- Alessa Beatrice Sadowski2 b. 8 Mar 2001
Lydia M. Sadowski1
Alessa Beatrice Sadowski1
Roger Collett1 
Children of Roger Collett and Doreen Frances Alvie Platt
- Susan Marjory Collett+2 b. 7 Feb 1939
- Roger James Collett+2 b. 14 Mar 1942
Doreen Frances Alvie Platt1
From 21 July 1934, her married name became Collett.
Children of Doreen Frances Alvie Platt and Roger Collett
- Susan Marjory Collett+2 b. 7 Feb 1939
- Roger James Collett+2 b. 14 Mar 1942
Roger James Collett1
He was educated at Ellesmere College, Ellesmere, Shropshire, EnglandG.1 He lived in 2003 at 8 Vanbrugh Fields, London, EnglandG.1
Children of Roger James Collett and Valerie Doreen Beasley
- Nicola Valerie Collett2 b. 1971
- Christopher James Collett2 b. 1973
