Not related, and have no further informatoin:

From: "Notes on Kentucky Veterans Of The War Of 1812," by G. Glenn Clift, published by Borderland Books, Anchorage, Kentucky, 1964. These notes were gathered by the author in the course of research for a book about the River Raisin Massacre January 18-23, 1813, from newspaper files, county pension lists, county histories, cemetery and other local records.

p 17:
"EMERSON, CAPT. JOHN. Burkesville, Cumberland County. Born near Chambersburg, PA, in which state he lived until the close of the Revolution; served in that war, and was at the fall of York, where he witnessed the surrender of Lord Cornwallis; removed to Kentucky at a very early date. "He wielded the axe that struck the first blow where now stands the proud city of Lexington, Kentucky... at the advanced age of 62 years he volunteered his services under Hopkins to be led once more, as a private soldier. Entering the army, as mentioned above, at the commencement of the revolution, he was appointed Lieutenant of his company, and was engaged at Brandywine, Germantown and Monmouth, among other battles... As a member of the lower branch of our State Legislature, he was a firm friend of the head-right settlers south of Green River, and the first mover of that series of laws which have received the appellation of the Relief System... At the age of 54 he studied law as a profession...and arrived at the highest honor of his profession." He died at his home in Burkesville, 17 Feb. 1836, aged 86 years, and was given a military funeral on 18 Feb. 1836. C, 2 Mar. 1836.