 Attached to its north side is a two-story single-room ell that dates to c. 1695, and was probably built by Exercise Conant, son of early Cape Ann settler Roger Conant.The house was listed on the National Register of Historic Places in 1990.A historical marker at the site reads, "Roger Conant was a prudent and religious man who led the old planters from Gloucester to Salem in 1626, and held them together until the Bay Colony was founded.