Robert William Montgomery is the Grandfather of Joseph Robert Mills for whom this website is dedicated. This never been seen before photo was taken in 1894 and published in one of two books of information on the Washington, DC Metropolitan Police Department. Sergt. Robert William Montgomery is standing on the bottom row, second from left. Furnished by Ms. Schmidt, Historian, Congressional Cemetery, DC. Modern techniques and digitizing of records is making genealogy research easier all the time.