M, b. 22 March 1887, d. 10 March 1945
| Nickname | | William John Mordy also went by the name of Jack. |
| Birth* | 22 March 1887 | He was born on 22 March 1887 at Westmeath Twp, Renfrew County, Ontario .1,2 |
| (with Parents) Census1891 | 22 April 1891 | He appeared on the 1891 Census of Westmeath Twp, Renfrew County, Ontario in the household of his parents, Andrew Mordy and Ann Elizabeth Ferguson.3 |
| (with Parents) Census1901 | 4 April 1901 | William John Mordy appeared on the 1901 Census of Westmeath Twp, Renfrew County, Ontario in the household of his parents, Andrew Mordy and Susan Victoria Major.4 |
| Occupation* | | William John Mordy was a farmer.5 |
| (with Uncle and Aunt) Census1910 | 3 May 1910 | He appeared on the 1910 Census of Drayton Twp, Pembina County, North Dakota in the household of his uncle and aunt, Joseph Mordy and Agnes McKillop.5 |
| Census1921* | 1 June 1921 | William John Mordy appeared on the 1921 Census of Gull Lake, Saskatchewan, enumerated 1 June 1921. |
| NatIntent* | 6 August 1928 | He filed a Declaration of Intention to become a naturalized citizen on 6 August 1928 at Los Angeles County, California .6 |
| Census1930* | 1930 | He appeared on the 1930 Census of Downey, Los Angeles County, California, enumerated 1930. |
| Naturalization* | 22 January 1934 | He was naturalized on 22 January 1934 at Los Angeles County, California .7 |
| Address | 1935 | As of 1935, William John Mordy lived at Artesia, Los Angeles County, California . |
| Census1940* | 20 April 1940 | He appeared on the 1940 Census of Twp 17, Contra Costa County, California, at San Joaquin Dairy, enumerated 20 April 1940. |
| Address* | 7 September 1940 | As of 7 September 1940, William John Mordy lived at 901 Cerritos Blvd, Bellflower, Los Angeles County, California . |
| WW2Draft* | 26 April 1942 | He registered for the draft for World War II on 26 April 1942, while living at 901 Cerritos Blvd, Bellflower, Los Angeles County, California .8 |
| Death* | 10 March 1945 | He died on 10 March 1945 at Bellflower, Los Angeles County, California , at age 57.2,9  |
| Burial* | 13 March 1945 | He was buried on 13 March 1945 at Los Angeles County, California .9 |