| Roles | Competed in Olympic Games | |
|---|---|---|
| Sex | Male | |
| Full name | William "Billy"•Twomey | |
| Used name | Billy•Twomey | |
| Born | 14 April 1977 in Cork, Cork |  IRL |
| Measurements | 172 cm / 75 kg | |
| NOC | Ireland | IRL |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 2012 Summer Olympics | Equestrian Jumping (Equestrian) | IRL |
Billy Twomey | |||
| Individual, Open (Olympic) | Tinka's Serenade | =56 |
