Naaman Henry Keyser (1867-1922) was a dentist and historian who resided in the Germantown section of Philadelphia, Pennsylvania. He was the author of many dental journal articles, historical addresses, and local histories, including History of Old Germantown, Volume I (with C. Henry Kain, John Palmer Garber, and Horace F. McCann. Philadelphia: Horace F. McCann, 1907.)
Sylvester Keyser (abt.1842-1916) enlisted in the 2nd Michigan Volunteer Infantry in 1861 and rose to the rank of Brevet Major upon his discharge in 1865. He later served in the Philadelphia Police Department, rising to the rank of Lieutenant.
From the guide to the Dr. Naaman H. Keyser family papers, 1802-1924, (Germantown Historical Society)