Cyrus Baldwin (engineer)

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Cyrus Baldwin (June 22, 1773 – June 23, 1854) was an American civil engineer from Massachusetts. He was one of five sons of Loammi Baldwin of Woburn and worked with his father and brothers on survey work. He later served as the agent for the Middlesex Canal and also worked as the inspector and sealer of gunpowder at Hale’s in Lowell, where he lived. Cyrus married Elizabeth Varnum, and they had one child who died young. Like his brothers—Benjamin Franklin Baldwin, Loammi Baldwin Jr., James Fowle Baldwin, and George Rumford Baldwin—he built a career as an engineer for canals and later railroads. In 1818, Cyrus and his brother Benjamin surveyed the Merrimack River to plan navigational improvements.