”LEAVITT, JOHN H., banker, and of the firm of Leavitt & Johnson; born in Franklin Co., Mass., Oct. 11, 1831 ; emigrated from his native county to this in Sept., 1854, first settling in this city. Married Caroline C. Ware Jan. 1, 1858, who was born in Putnam Co., Ill, Oct. 11, 1835. Mr. Leavitt commenced the banking business in this city in 1856.”

Source:  The History of Black Hawk County, Iowa, by Western Historical Co., Chicago, 1878, pages 460-70