Lt. John F. McGlensey, a Pennsylvania-born, 1860 graduate of the U.S. Naval Academy, started the Civil War on duty at the Washington Navy Yard. Later in 1861, he joined the South Atlantic Blockading Squadron. In this capacity he participated in the capture of Port Royal, S.C., on November 7, 1861. The engagement was one of the earliest Union amphibious operations. He survived the war and remained in the navy until his retirement in 1893. He died in Washington, D.C., three years later.
His image is now available on Pinterest, Tumblr, and Flickr:
I am his direct descendant, My son & i are so proud of him. We wish he had lived longer. Before the war he had Grocery storesin philadelphia. His Warehouseswee from 2nd thru 4th on front. He Lived at 1927 arch street.His Son John went to Cornell.He was an Electrical engineer, that was one of the few who made Electricity Happen, & Work! He was a Genius!