William N. McKelvy, Sr.

William Nessler McKelvy Sr. (July 15, 1869 - September 22, 1933) was an American officer born in Allegheny, Pennsylvania and serving in the United States Marine Corps during the Spanish-American War who was one of 23 Marine Corps officers approved to receive the Marine Corps Brevet Medal for bravery. He was commissioned in the Marine Corps in 1893.

Presidential citation
Citation:
 * The President of the United States takes pleasure in presenting the Marine Corps Brevet Medal to William Nessler McKelvy, Sr., First Lieutenant, U.S. Marine Corps, for distinguished conduct and public service in the presence of the enemy at Guantanamo, Cuba, 11 June 1898. On 18 March 1901, appointed Captain by brevet.

Secretary of the Navy citation
Citation
 * The Secretary of the Navy takes pleasure in transmitting to First Lieutenant William Nessler McKelvy, Sr.,, United States Marine Corps, the Brevet Medal which is awarded in accordance with Marine Corps Order No. 26 (1921), for distinguished conduct and public service in the presence of the enemy while serving with Artillery Battery, First Marine (Huntington's) Battalion, at Guantanamo, Cuba, on 11 June 1898. On 18 March 1901, First Lieutenant McKelvy, is appointed Captain, by brevet, to take rank from 11 June 1898.