Pete Daoust
Civil law and common law occasionally overlap or contradict each other. For instance, under section 91 (26) of the British North America, 1867, marriage and divorce fall under federal jurisdiction. However, marriage ceremonies are solemnized according to the Quebec civil code, while divorce proceedings may apply federal laws and regulations and common law concepts such as in loco parentis which has no equivalent at civil law according to which only the biological or legally adoptive relationship with offspring are recognized.
Criminal law is, however, based on the common law system. See Law of Canada.