Alfred Wilkinson Johnson was a career officer of the United States Navy who served in the Spanish–American War and World War I, commanded several ships, and served as Director of Naval Intelligence, reaching the rank of Vice Admiral. He retired in December 1940.

Philip Carrigan Johnson Jr. was a United States Navy officer. He served during the Mexican–American War and commanded two ships in combat during the American Civil War. After the war, he commanded the coastal survey ship Hassler from 1871 to 1872 during an expedition to the Strait of Magellan and both southern coasts of South America accompanied by natural historian Louis Agassiz.