From notes of Maj. Dana Mansur, Jr.: Horace Mansur and his family removed to Dracut, Massachusetts after 1842 and before1850, probably to find work in the textile mills in the adjoining city of Lowell. He is listed in the 1850 Dracut census as an operative, a common trade in textile manufacturing. All of his children are listed in the1850 census except Elijah H., who probably was born after 1850.