He and his wife then moved to Buffalo, New York, in 1839, where he was made a partner of a banking business owned by his uncle, George C. White, and started a branch called White and Williams (later renamed White's Bank of Buffalo).
After relocating to Buffalo, New York, with his wife in 1839, he joined forces with his uncle's banking business, becoming a partner, and subsequently founded the White and Williams branch, which was later rebranded as White's Bank of Buffalo.