| Roles | Competed in Olympic Games | |
|---|---|---|
| Sex | Male | |
| Full name | Guglielmo Senne "Sem"•De Ranieri | |
| Used name | Sem•De Ranieri | |
| Born | 4 June 1888 in Viareggio, Lucca |  ITA |
| Died | 13 February 1979 (aged 90 years 8 months 9 days) in Viareggio, Lucca | ITA |
| NOC | Italy | ITA |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1920 Summer Olympics | Shooting | ITA |
Sem De Ranieri | |||
| Military Rifle, Standing, Team, Men (Olympic) | Italy | 4 | ||||
| Military Rifle, Prone, Team, Men (Olympic) | Italy | 9 | ||||
| 1924 Summer Olympics | Shooting | ITA |
Sem De Ranieri | |||
| Free Rifle, Prone, Men (Olympic) | =65 | |||||
| Free Rifle, Team, Men (Olympic) | Italy | 10 |
