| 1. | Hiram Percy, 1869–1936, U.S. inventor. |
| 2. | his father, Sir Hiram Stevens, 1840–1916, English inventor, born in the U.S.: inventor of the Maxim gun. |
| 3. | Hudson, 1853–1927, U.S. inventor and explosives expert (brother of Sir Hiram Stevens Maxim). |
| 4. | a male given name, form of Maximilian. |