Mary Louise Clarke 1861 (Mrs. Henry W. Derby)
teacher Cincinnati
Married 1864
Children:
Earle born 1865
Lillian born 1867
Harry born 1871
John born 1878
died 1920 in Brookline
Source
All information from One Hundred Year Biographical Directory of Mount Holyoke College 1837-1937, Bulletin Series 30, no. 5; published and compiled by the Alumnae Association of Mount Holyoke College, South Hadley, Massachusetts