Margaret Barker Sigourney was the wife of Boston lawyer Henry Sigourney (1783–1849). In 1864, just as the Civil War was coming to a close, Sigourney purchased a piece of land on Bellevue Avenue in Newport soon after the time that Newport had been rediscovered as a tourist destination for the elite class. Sigourney wanted to make a splash as a single woman summering in Newport, so she hired local architect George Champlin Mason to design her cottage in the fashionable Second Empire style. The refined facade is more academic, while the rear and side facades exhibit porches with delicate bargeboards and trim. Sigourney spent summers at her cottage with her only son until 1873 when he and his family perished and were lost at sea aboard the Ville du Havre, when it collided in the Atlantic with another ship, killing a total of 226 aboard the ships, many of which drowned and their bodies never recovered. Alone, Margaret Sigourney continued to spend her summers in Newport until her own death in 1885.