Laurance, John (lôrˈəns) [key], 1750–1810, American Revolutionary officer, b. near Falmouth, Cornwall, England; son-in-law of Alexander MacDougall. A lawyer, he was (1777–82) judge advocate general of the Continental Army and presided at the trial of Major John André. He served in the Continental Congress (1785–87), in the House of Representatives from New York (1789–93), and was U.S. Senator from New York (1796–1800).
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