| 1. George ISAAC |
 |
| B: |
2 May 1808 |
| P: |
Udny, Aberdeenshire, Scotland |
| D: |
28 Apr 1874 |
| P: |
Haldimand Township, Northumberland County, Ontario, Canada |
|
| 2. William ISAAC |
|
| B: |
30 Apr 1786 |
| P: |
Udny, Aberdeenshire, Scotland |
| M: |
|
| P: |
Scotland |
| D: |
9 Jun 1878 |
| P: |
Haldimand Township, Northumberland County, Ontario, Canada |
|
| 4. George ISAAC |
|
| B: |
2 Feb 1752 |
| P: |
Leslie, Aberdeenshire, Scotland |
| M: |
7 Feb 1780 |
| P: |
Premnay, Aberdeenshire, , Scotland |
| D: |
1792 |
| P: |
|
|
| 8. John ISAAC (MCISAC) |
|
| B: |
1727 |
| P: |
|
| M: |
11 May 1749 |
| P: |
Drumblade, Aberdeenshire, , Scotland |
| D: |
Yes, date unknown |
| P: |
|
|
1808 - 1874 (65 years)