Dauphin Adolphus Thompson, brother of William Thompson, and one of John Brown's lieutenants, and a North Elba neighbor of the Brown family. Was born April 17, 1838. He was "very quiet, with fair, thoughtful face, curly blonde hair, and baby-blue eyes." His sister Isabel was married to Watson Brown; and Henry Thompson, his elder brother, was married to Ruth, the daughter of John Brown. He was killed in the raid on Harper's Ferry.