Nathaniel Ober, a shoemaker of Wenham, Mass. first marched with the Continental Army during the Lexington Alarm, April 19, 1775. He formally enlisted in early May 1775 and served at least through October of that year.

Source: Massachusetts. Secretary of the Commonwealth. Massachusetts Soldiers and Sailors of the Revolutionary War: A Compilation from the Archives. Boston: Wright and Potter Printing Co., State Printers, 1896-1908. 27 vols.