According to The Book of Dow, Lorenzo Dow b. Cabot 1821 d Iowa City, Iowa 1898; car conductor of Concord NH, m. Mary Mills b Concord. Gives only one child John G. b. Montpelier 22 Oct 1844; d Concord 19 Jan 1914. No rec. of m or children. Author says Lorenzo and Mary probably had other children.
Lorenzo was son of John G Dow, a distinguished Meth. Preacher and his 2nd wife Betsey Lance of Cabot, b. Chester NH 1796.
John G was son of Nathaniel Dow and Esther Gilman. The book follows the line back to Henry Dow. email me if you need more info.