M, b. 3 May 1857, d. 30 January 1932
| Birth* | John Cyrus Jefferson was born on 3 May 1857 at Canada West, British North America.1,2,3,4,5 |
| (Member of household) Census | He appeared on the census of 1881 as a member of the household of John Keddy Jefferson at Hibbert Township, Perth, Ontario, Canada.6 |
| (Witness) Marriage | John Cyrus Jefferson witnessed the marriage of Charles Adridge Jefferson and Delilah Watson on 31 December 1884 at Hibbert Township, Perth, Ontario, Canada.7 |
| Occupation* | John Cyrus Jefferson was a farmer in 1911 at Hibbert Township, Perth, Ontario, Canada.2 |
| (Son) Census | He appeared on the census of 1911 as the son of John Keddy Jefferson at Dublin, Perth, Ontario, Canada.1 |
| Marriage* | John Cyrus Jefferson married Emma Sarah Sawyer, daughter of Henry James Sawyer and Mary Jane Wills, on 4 October 1911 in the residence of Mary (Spice) Sawyer at 74 Trafalgar Street, Mitchell, Perth, Ontario, Canada . The wedding party included George Edward Sawyer, Emma Lucinda (Hutchison) Sawyer and Mary (Spice) Sawyer.2 |
| Residence* | John Cyrus Jefferson and Emma Sarah (Sawyer) Jefferson lived in 1912 at Hibbert Township, Perth, Ontario, Canada.8 |
| Property-Sale* | John Cyrus Jefferson purchased Lot 6, Park Lot 21, Plan 337 (Joseph Keterson Survey), 169 St. George Street, Mitchell, Perth, Ontario, Canada   , on 1 November 1918 from Margaret Campbell for $2,100.9 |
| Occupation | John Cyrus Jefferson was a labourer in 1921 at Mitchell, Perth, Ontario, Canada.3 |
| Census* | He appeared as the head of a household along with his wife, Emma Sarah (Sawyer) Jefferson on the census of 1921 at Lot 6, Park Lot 21, Plan 337 (Joseph Keterson Survey), 169 St. George Street, Mitchell, Perth, Ontario, Canada   .3 |
| Will* | John Cyrus Jefferson left a will on 15 November 1928 at Mitchell, Perth, Ontario, Canada, witnessed by Roy Harvey Munro and Viola F. Ratz. The beneficiaries were William Robert Jefferson, Albert Edward Jefferson, Nelson Jefferson, Wesley Victor Jefferson, Melissa Olive (Jefferson) McCready, Henrietta (Jefferson) Way, Mary Bernice Jefferson, Alberta May (Jefferson) McCutcheon and Emma Sarah (Sawyer) Jefferson.10 |
| Census | John Cyrus Jefferson appeared as the head of a household along with his wife, Emma Sarah (Sawyer) Jefferson on the census of 1931 at Lot 6, Park Lot 21, Plan 337 (Joseph Keterson Survey), 169 St. George Street, Mitchell, Perth, Ontario, Canada   .4 |
| Death* | John Cyrus Jefferson died on 30 January 1932 of "cerebral thrombosis" at Mitchell, Perth, Ontario, Canada, at age 74.5,11,10 |
| Burial* | He was buried on 2 February 1932 at Woodland Cemetery, Mitchell, Perth, Ontario, Canada.5,11  |
| Probate | His estate was probated on 26 April 1932 at Surrogate Court, Stratford, Perth, Ontario, Canada. The executors assigned by the court were Robert Keddy Horney and James Samuel Brown. The estate was valued at $16,798.60.10 |
| Property-Sale* | Robert Keddy Horney and James Samuel Brown, executor(s) of the estate of John Cyrus Jefferson sold Lot 6, Park Lot 21, Plan 337 (Joseph Keterson Survey), 169 St. George Street, Mitchell, Perth, Ontario, Canada   , on 14 November 1932 to Emma Sarah (Sawyer) Jefferson for $1.00.12 |