| Source: Portraits of Members of Armed Forces from St.
Louis City and County Killed in World War I Location: Reading room | |
 | |
| Last Name: | Clifford |
| First Name: | Robert |
| Middle Name: | Coyne |
| Illustration: | Yes |
| Rank: | Lieutenant |
| Birth Year: | 1889 |
| Death Year: | 1919 |
