| Year | Event |
| 2278 |
| Canon source | Backstage source | Novel source | DITL speculation |
| # | Series | Season | Source | Comment |
| 1 | TNG | 5 | Cause and Effect | |
| 2 | TNG | 5 | Unification, Part 1 | He had served for 9 decades. |
| Series : | TNG Season 5 |
| Episode : | Cause and Effect |
| Series : | TNG Season 5 |
| Episode : | Unification, Part 1 |
| Comment : | He had served for 9 decades. |
| © Graham & Ian Kennedy | Page views : 7,839 | Last updated : 7 Jul 2004 |
