Evelyn Sophia (?)1 
From circa 1881, her married name became Trevelyan.
Children of Evelyn Sophia (?) and George Edward Trevelyan
- George Hamilton Trevelyan3 b. 1880, d. 1918
- Edward Walter Trevelyan+3 b. 1881, d. 1947
- Evelyn Helena Trevelyan3 b. 1884, d. 13 Dec 1957
- [S37] BP2003 volume 3, page 3933. See link for full details for this source. Hereinafter cited as. [S37]
- [S4567] Bill Norton, “re: Pitman Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 6 April 2010 and 19 April 2011. Hereinafter cited as “re: Pitman Family.”
- [S37] BP2003. [S37]
George Hamilton Trevelyan1 
- [S37] BP2003 volume 3, page 3933. See link for full details for this source. Hereinafter cited as. [S37]
- [S4567] Bill Norton, “re: Pitman Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 6 April 2010 and 19 April 2011. Hereinafter cited as “re: Pitman Family.”
- [S37] BP2003. [S37]
Edward Walter Trevelyan1 
Children of Edward Walter Trevelyan and Kathleen E. H. Irving
- Norman Irving Trevelyan+2 b. 29 Jan 1915, d. 1996
- Eva Trevelyan2 b. 1919
Kathleen E. H. Irving1
From 1911, her married name became Trevelyan.
Children of Kathleen E. H. Irving and Edward Walter Trevelyan
- Norman Irving Trevelyan+2 b. 29 Jan 1915, d. 1996
- Eva Trevelyan2 b. 1919
Norman Irving Trevelyan1 
He was educated at The Cate School, Carpinteria, California, U.S.A.1 He was educated at Harvard University, Cambridge, Massachusetts, U.S.A.1
Children of Norman Irving Trevelyan and Jennifer Mary Riddett
- unknown daughter Trevelyan2 b. 20 Apr 1952
- Jane Trevelyan2 b. 25 May 1953
- Dr. Edward Norman Trevelyan+2 b. 14 Aug 1955
- George Arthur Trevelyan2 b. 27 Jun 1958
Olivia Rachelle Page
Jennifer Mary Riddett1
From 11 July 1951, her married name became Trevelyan. She lived in 2003 at 1041 Adella Avenue, Coronado, California, U.S.A.1
Children of Jennifer Mary Riddett and Norman Irving Trevelyan
- unknown daughter Trevelyan2 b. 20 Apr 1952
- Jane Trevelyan2 b. 25 May 1953
- Dr. Edward Norman Trevelyan+2 b. 14 Aug 1955
- George Arthur Trevelyan2 b. 27 Jun 1958
Dr. Edward Norman Trevelyan1
He graduated from University of California San Diego, San Diego, California, U.S.A.G, in 1981 with a Bachelor of Arts (B.A.)1 He was awarded the Olympic Gold Medal in 1984 Soling C1 Yachting event.1 He graduated from University of California, Santa Barbara, California, U.S.A.G, in 1986 with a Master of Arts (M.A.)1 He was an administrator in 1990 at University of California, Santa Barbara, California, U.S.A.1 He graduated from University of California, Santa Barbara, California, U.S.A., in 1998 with a Doctor of Philosophy (Ph.D.)1 He was Statistician, U.S. Bureau of the Census in 1999.1 He lived in 2003 at 416 Bay City Road, Stevensville, Maryland, U.S.A.1
Children of Dr. Edward Norman Trevelyan and Debbie J. Mullin
- Reed Edward Trevelyan2 b. 6 Oct 1996
- Drew Elaine Trevelyan2 b. 20 Jan 1999