The Poles are the vintagers in Normandy. The Norman vintage
consists of apples beaten down by poles. The French say, “En
Normandie l'on vendange avee la gaule,” where gaule is a play on
the word Gaul, but really means a pole.
The Gem of Normandy.
Emma, daughter of Richard I. (* -1052.)
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894