This appears to be the marriage of a brother of Jean Guèvremont junior (AD 76, Dieppe Saint-Rémy, BMS 1698, image 29/47) : on October 19, 1698, Adrien Quevremont, 29, son of Jean and Magdeleine Langlois, married Marguerite Nèpveu in Dieppe, Saint-Rémy parish.
Note that the name is spelled with a Q.
Adrien (and Jean) have an uncle also named Adrien Quevremont.
Jean's baptism, on December 3, 1666, also has is name spelled with a Q (AD 76, Dieppe Saint-Rémy, BMS 1663-1666, image 52/53). Compare the initial letter of Quevremont with that of Gillet (his godmother), they are clearly different (the tail of q goes to the right, while that of g goes to the left). So I think LNAB should be changed for both Jean and his father.