 In 1815, Paul Whitin became a partner with Fletcher, and his two brothers-in-law, Samuel and Ezra Fletcher, under the firm name of Whitin and Fletcher.Then they built a second mill with 300 spindles on the opposite side of the Mumford River.Paul Whitin then bought out the Fletcher shares in 1826 and formed a new partnership with his two sons, Paul Jr. and John Crane Whitin.