Jonathan Congdon (1763-1862) worked in the hardware and iron business, following his father’s footsteps, eventually taking over the family business. Jonathan married Elizabeth Arnold and had at least nine children together. Two of their sons, Arnold and Welcome, too followed in the family business, as ironworkers and salesmen, with the new firm name, Jonathan Congdon & Sons. The company did well, and Jonathan replaced his c.1787 home on the lot (built at the time of his marriage) with the present structure. He also laid out a street on the side of the property, which was named Congdon Street. The home remained in the Congdon Family until 1937, when it was acquired by the Rhode Island School of Design (RISD).