1878 - 1967 (88 years)
| Thomas George Slack 1903-1962 |
| Thomas George Slack | |
| B: | 11 Apr 1903 |
| Lambton Co., Ontario | |
| D: | 14 May 1962 |
| Prince George, British Columbia | |
|
| Augustus Manford Slack 1878-1967 |
| Augustus Manford Slack | |
| B: | 19 Aug 1878 |
| Enniskillen Twp., Lambton, Ontario | |
| D: | 2 May 1967 |
| Calgary, Alberta | |
 | Martha Musa Robertson 1881-1945 |
| Martha Musa Robertson | |
| B: | 7 Dec 1881 |
| Sarnia, Lambton, Ontario | |
| M: | 18 Jan 1902 |
| Lambton Co., Ontario | |
| D: | 2 May 1945 |
| Turner Valley, Alberta | |
