 1881 - 1969 (87 years)
| 1. James Roy Cowan |
 |
| B: |
17 Jun 1881 |
| P: |
Waterloo Twp., Waterloo Region, Ontario, Canada |
| D: |
16 Jan 1969 |
| P: |
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| 2. Lt. Col. James Laing Cowan |
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| B: |
4 Feb 1847 |
| P: |
Waterloo Twp., Waterloo Region, Ontario, Canada |
| M: |
6 Nov 1878 |
| P: |
North Dumfries Twp., Waterloo Region, Ontario, Canada |
| D: |
19 Sep 1936 |
| P: |
Galt (Cambridge), Waterloo Region, Ontario, Canada |
|
| 4. James S. Cowan, MP |
|
| B: |
3 Nov 1803 |
| P: |
Henderland, Megetdale, Peebles, Scotland |
| M: |
1834 |
| P: |
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| D: |
22 May 1900 |
| P: |
Galt (Cambridge), Waterloo Region, Ontario, Canada |
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| 8. Thomas Cowan |
|
| B: |
1770 |
| P: |
, Scotland |
| M: |
1802 |
| P: |
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| D: |
1833 |
| P: |
Moffat, , Dumfries, Scotland |
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| 5. Helen Laing |
|
| B: |
26 Feb 1811 |
| P: |
Moffat, , Dumfries, Scotland |
| D: |
1892 |
| P: |
Galt (Cambridge), Waterloo Region, Ontario, Canada |
|
| 10. William Laing |
|
| B: |
Abt 1775 |
| P: |
of, Scotland |
| M: |
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| P: |
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| D: |
Yes, date unknown |
| P: |
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| 11. Isabella Hastie |
|
| B: |
1776 |
| P: |
, Scotland |
| D: |
17 Nov 1855 |
| P: |
Waterloo Twp., Waterloo Region, Ontario, Canada |
|
| 3. Susannah Blackwood |
|
| B: |
12 Aug 1856 |
| P: |
Montreal, Ile De Montreal, Quebec |
| D: |
27 Mar 1934 |
| P: |
Galt (Cambridge), Waterloo Region, Ontario, Canada |
|
| 6. Robert Blackwood |
|
| B: |
10 Jun 1826 |
| P: |
, Scotland |
| M: |
18 Nov 1852 |
| P: |
Clackmannan, , Clackmannan, Scotland |
| D: |
16 Sep 1918 |
| P: |
Galt (Cambridge), Waterloo Region, Ontario, Canada |
|
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| 13. Mary |
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| B: |
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| P: |
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| D: |
Yes, date unknown |
| P: |
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| 7. Susan Roy |
|
| B: |
1822 |
| P: |
Dollar, , Clackmannan, Scotland |
| D: |
2 Jan 1894 |
| P: |
Waterloo Twp., Waterloo Region, Ontario, Canada |
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| 15. |
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