From the FamilySearch website:
, "notaires" (notaries) have registered contracts since 1626. These include deeds, wills, marriage contracts, and other records. The persons involved in the contracts received the originals. The notaries kept copies. The copies are called "minutes." Quebec
Each document in a notary's minutes gives at least the name of the notary, the date and place the document was prepared, the names and addresses of the persons involved, and the names and addresses of the witnesses. The ages and relationships of the witnesses and the persons involved are sometimes included.
The time frame covered by these records is 1800-1900.
Here's the link: