Article 154 of the French Civil Code
Dissension between father and mother, between grandfather and grandmother of the same line, or between grandfathers of both lines may be ascertained by a notary, requested by the future spouse and acting without the assistance of a second notary or witnesses, who shall notify the proposed union to the father, mother or grandfathers or grandfathers whose consent has not yet been obtained. The act of notification shall state the forenames,…