John Langdon was a merchant, shipbuilder, Revolutionary War leader, signer of the U.S. Constitution, and three-term governor of New Hampshire. He built his impressive home on Pleasant Street to express his status as Portsmouth’s leading citizen.
The house tells the story of the early colony of New Hampshire, the glory days of the city’s mercantile boom, and the Colonial Revival movement that blossomed in Portsmouth during the early twentieth century.
Today the building is managed and maintained by Historic New England.