F, b. 1866
| Birth* | 1866 | Mary McCaughan was born in 1866. |
| Marriage* | 11 April 1887 | She married Reuben William Sweezey, son of Aaron Sweezey and Jessie Rankin, on 11 April 1887 at Pembroke, Renfrew County, Ontario . |
| Census1901* | 31 March 1901 | Mary McCaughan and Reuben William Sweezey appeared on the 1901 Census of Clara Twp, Renfrew County, Ontario, enumerated 31 March 1901. Their children Sarah Margaret, Alexander Rankin, Martha, Reuben William, Aaron and Chester were listed as living with them. |
| Census1921* | 1 June 1921 | Mary McCaughan and Reuben William Sweezey appeared on the 1921 Census of Fort Pitt, North Battleford, Saskatchewan, enumerated 1 June 1921. Their children Reuben William, Aaron and Chester were listed as living with them. |