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Mansfield Lovell. Courtesy of the Library of Congress (LC-B8172-2010).

Article

Lovell, Mansfield (20 October 1822–01 June 1884), soldier and civil engineer, was born in Washington, D.C., the son of Dr. Joseph Lovell, surgeon general of the U.S. Army from 1818 to 1836, and Margaret Mansfield. Having entered West Point at the age of sixteen, he graduated in 1842 and was assigned to the Fourth Artillery Regiment as a second lieutenant. During the Mexican War he was wounded at the battle of Monterrey (18–21 Sept. 1846) and in the storming of Mexico City (13–14 Sept. 1847), in the process winning promotion to first lieutenant and being brevetted captain for gallantry in action. In 1849 he married Emily Plympton, the daughter of an army officer. In 1854, tiring of garrison duty along the frontier, he resigned from the army to take a position with the Cooper & Hewitt’s Iron Works in Trenton, New Jersey. In 1858 he moved to New York City, where he was at first superintendent of street improvement, then deputy street commissioner under another future Confederate general, ...

Article

St. John, Isaac Munroe (19 November 1827–07 April 1880), soldier and engineer, was born in Augusta, Georgia, the son of Isaac Richards St. John, a businessman, and Abigail Richardson Munroe. St. John graduated from Yale in 1845, the youngest member of his class. He briefly studied law and worked as assistant editor of the ...