Reuben left his job as bank clerk in Baltimore and enlisted in the Revolutionary Army at 19 years of age. He was commissioned a captain of the Independent Blues in 1798 and was later appointed a United States Marshal for the State of Maryland by President Thomas Jefferson. He suffered capture by the British at the surrender of Charleston and died in British captivity, apparently of starvation, as the only food offered prisoners was pork.

From Mikveh Israel: The Story, by Shirley Milgrim, http://www.ushistory.org/mikvehisrael/, and S. Birmingham, _The Grandees_, and _Bio History of Westchester County_, pp. 761-2.