Family name origins & meanings
- French : habitational name from places in Eure and Somme called Gamaches, first recorded in the 8th century as Gannapio and Gammapium respectively. The place names are of uncertain origin; one suggestion is that they may have been named with the Celtic elements cam ‘bent’, ‘winding’ + apia ‘water’.
- A family of this name was established in Château Richer, Quebec, by 1676.