Based on Library and Archives Canada data for Canadian servicemen and servicewomen killed in action for which no exact birth date is known, their most likely year of birth was 1920.
The table below gives the birth dates for which more than 20 fatalities were recorded. They range from March 1920 to May 1921
| Birth Date | Number of Deaths |
|---|---|
| 05 Oct 1920 | 25 |
| 27 Apr 1921 | 24 |
| 02 Mar 1920 | 22 |
| 10 Jan 1921 | 22 |
| 19 Oct 1920 | 22 |
| 08 May 1921 | 21 |
| 11 May 1921 | 21 |
| 21 Aug 1920 | 21 |
| 21 Mar 1921 | 21 |
The data triggered in my mind my uncle Edward, who died in a flying accident serving with the RAF. I checked my database. Yes, he was born on 7 March 1921, within the range of those dates.