 1840 - 1912  (72 years)
 1840 - 1912  (72 years) 1909-1967
 1909-1967
| WILLIAMSON, John Arthur | |
| B: | 15 Sep 1909 | 
| Ontario, Canada | |
| D: | 16 Aug 1967 | 
| Ontario, Canada | |
 1911-1987
 1911-1987
| FAIRBARN, Anna Lena | |
| B: | 2 Nov 1911 | 
| East Gwillimbury, York, Ontario, Canada | |
| D: | 4 Dec 1987 | 
| Pefferlaw, Ontario, Canada | |
 1874-Yes, date unknown
 1874-Yes, date unknown
| DUNN, Jessie | |
| B: | Mar 1874 | 
| York, Ontario, Canada | |
| D: | Yes, date unknown | 
 1874-1932
 1874-1932
| WILLIAMSON, Joseph | |
| B: | 5 Aug 1874 | 
| Ontario, Canada | |
| M: | 3 Jun 1896 | 
| York, Ontario, Canada | |
| D: | 11 Aug 1932 | 
| York, Ontario, Canada | |
 1840-1912
 1840-1912
| DUNN, Arnold | |
| B: | 20 Mar 1840 | 
| Markham, York, Ontario, Canada | |
| D: | 18 Jun 1912 | 
| East Gwillimbury, York, Ontario, Canada | |
 1842-1930
 1842-1930
| O'BRIEN, Catherine Alice | |
| B: | 28 Feb 1842 | 
| Ontario, Canada | |
| M: | 15 Jan 1873 | 
| Toronto, York, Ontario, Canada | |
| D: | 11 Aug 1930 | 
| Mount Albert, York, Ontario, Canada | |