Melville Louis Kossuth (Melvil) Dewey (December 10, 1851 – December 26, 1931) was an American librarian and educator, inventor of the Dewey Decimal system of library classification, and a founder of the Lake Placid Club.
Dewey was born in Adams Center, New York, the fifth and last child of Joel and Eliza Greene Dewey. He attended rural schools and determined early that his destiny was to reform education of the masses.
Dewey married twice, first to Annie R. Godfrey, and then to Emily McKay Beal. He and his first wife had one child, Godfrey.
"New York State Census, 1865," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QVNV-W85D : accessed 1 October 2016), Joel Dewey, District 02, Adams, Jefferson, New York, United States; citing source p. 41, line 8, household ID 292, county clerk, board of supervisors and surrogate court offices from various counties. Utica and East Hampton Public Libraries, New York; FHL microfilm 895,244.
Anna Elliott (May 1981). "Melvil Dewey: A Singular and Contentious Life". Wilson Library Bulletin.