I'm not to sure if you got the answer you were looking for, but I got the date from Tome 11 Partie Genealogique (L a Z)
Insititut Genealogique Drouin
Montreal Paris
Siege Social
4184, rue St-Denis
Montreal, Canada
The letter head said
Dictionnaire National Des
Canadiens- Francais (1608-1760)
If you would like to get more info, you can contact me at
Lizane64@yahoo.ca