The Bellport-Brookhaven Historical Society, a non-profit organization devoted to the preservation and interpretation of its local history, was founded in 1958, and is governed by a board of trustees with over 300 members. The Society’s first president was Robert H. Pelletreau, a direct descendent of the well-known Revolutionary era, Long Island silversmith Elias Pelletreau.
The land on which Bellport Village and Brookhaven Hamlet are situated was purchased from the Unkechaug Indians in 1664. Brookhaven Hamlet was first settled in 1681 and Bellport Village was established in the early 1800’s. Part of Brookhaven Hamlet is a designated “historic district” within the Town of Brookhaven. In 1980, the National Register of Historic Places added to the Register over 80 houses in Bellport Village. In 2001 Bellport Village established a Historic Preservation Commission, which has since designated four historic districts in the village. The Historical Society’s Museum Complex is situated in the center of these districts.