M, b. 30 March 1853
| Birth* | 30 March 1853 | John Jack was born on 30 March 1853 at Ontario . |
| Marriage* | | He married Elizabeth Cowdry. |
| Census1901* | 18 April 1901 | John Jack and Elizabeth Cowdry appeared on the 1901 Census of Ross Twp, Renfrew County, Ontario, enumerated 18 April 1901.1 |
| Census1911* | 14 June 1911 | John Jack and Elizabeth Cowdry appeared on the 1911 Census of Ross Twp, Renfrew County, Ontario, enumerated 14 June 1911. Their children Mary Ellen and John were listed as living with them.2 |
| Residence* | 1916 | John Jack lived in 1916 at Con 8 Lot 23, Ross Twp, Renfrew County, Ontario . |