At the start of the Town's founding, the Schoolcraft family was prominent. Congressman John L. Schoolcraft was born in Guilderland in September 1806. When his father, Captain John Schoolcraft, died in December of the same year, he was raised by his grandfather, John Schoolcraft. Wealthy grandfather Schoolcraft, owned much property in Guilderland hamlet, ran an inn and tavern, was the first Justice of the Peace in the hamlet, an elder and trustee of the Hamilton Union Church, and a member of the first Guilderland School Board. He was also the uncle of the famed Henry Rowe Schoolcraft. John L. Schoolcraft started a profitable mercantile business, became president of Albany Commercial Bank (later to become a component of today's Key Bank), and was groomed for politics by Thurlow Weed, editor of the Albany Evening Journal, winning his first Congressional election in 1848. In the 1840s, Schoolcraft built the early Gothic Schoolcraft mansion John Schoolcraft House upon his return from a European journey. He used it mostly as a summer residence. Schoolcraft was a close friend and confidant of Governor William Seward and married Seward's niece, Carolyn Canfield, in 1853.