| Ratings 
 
 
  | Year | Rank | Edo | Dev. | Games |  
  | 1940 | 1335 | 1190 | (148) | 9 |  
  | 1941 | 1328 | 1187 | (145) | 0 |  
  | 1942 | 1183 | 1184 | (141) | 0 |  
  | 1943 | 1119 | 1181 | (138) | 11 |  
 
Rating table notes
 | 
| Biographical data |  | 
   | Name: Wren, Fred Montelle |  
   | Born: 29 Apr. 1900 |  
   | Died: 30 Aug. 1978 |  |  |  |  
   | References |  | 
| Books |  
   | Di Felice, Chess Results, 1936-1940, page 311 |  
   | Di Felice, Chess Results, 1941-1946, page 365 |  
   | Gaige, Chess Personalia, page 470 |  | Web |  
   | Wright, Stephen.  [Early Canadian Championships] |  |  |