George Bryan Porter was born at Broome, N.H., 1803; studied law and was admitted to the bar; settled in Detroit, 1829; was some years with Dorr & Jones; then in the old Bank of Mich., and cashier of the Kalamazoo branch; with James F. Joy he founded the legal: firm of Joy & Porter, 1837, and was connected with it until his health failed, 1857; died in Detroit, Aug. 21, 1882. (from Farmer's Detroit, v.21 p. 1126, with port. ; Middle name Flagg stated by his grand-niece May E. Porter) (blue index cards)
From the description of George B. Porter papers, 1812-1848 (Detroit Public Library). WorldCat record id: 612307033