| Production | Played by | Opening Night |
|---|---|---|
| Galileo 1965 (Abbey) | Ó Briain, Micheál | Tuesday, 21 September 1965 |
| Galileo 1965 (Abbey) | Ó Briain, Micheál | Tuesday, 5 October 1965 |
| Galileo 1965 (Abbey) | Ó Briain, Micheál | Monday, 25 October 1965 |
| Production | Played by | Opening Night |
|---|---|---|
| Galileo 1965 (Abbey) | Ó Briain, Micheál | Tuesday, 21 September 1965 |
| Galileo 1965 (Abbey) | Ó Briain, Micheál | Tuesday, 5 October 1965 |
| Galileo 1965 (Abbey) | Ó Briain, Micheál | Monday, 25 October 1965 |