More on the French Froc/Frock

French reversible men's Frock 1750-1762.

French woman's robe. 1750-1762

I found this full image of the 18th century French peasant family.

French burial detail of peasants on the field of battle. No date. All are wearing frocks and wooden clogs. Judging by the trousers on the peasants and the bodies, I would say this is 19th century.