[klahrk] 
| 1. | Alvan, 1804–87, and his son Alvan Graham, 1832–97, U.S. astronomers and telescope-lens manufacturers. |
| 2. | Champ [champ] , (James Beauchamp ), 1850–1921, U.S. political leader: Speaker of the House 1911–19. |
| 3. | (Charles) Joseph (Joe), born 1939, Canadian political leader: prime minister 1979–80. |
| 4. | George Rogers, 1752–1818, U.S. soldier. |
| 5. | John Bates [beyts] , 1847–1938, U.S. economist and educator. |
| 6. | Kenneth B(ancroft), 1914–2005, U.S. psychologist and educator, born in the Panama Canal Zone. |
| 7. | Sir Kenneth McKenzie, Baron Clark of Salt⋅wood [sawlt-wood] , 1903–83, English art historian. |
| 8. | Mark Wayne, 1896–1984, U.S. general. |
| 9. | Thomas Campbell (Tom), 1899–1977, associate justice of the U.S. Supreme Court 1949–67. |
| 10. | Walter Van Til⋅burg [van til-berg] , 1909–71, U.S. author. |
| 11. | William, 1770–1838, U.S. soldier and explorer (brother of George R. Clark): on expedition with Meriwether Lewis 1804–06. |
| 12. | a male given name: a surname, ultimately derived from clerk. |