Wherefore art thou, aberil?

[ReneZ]

Indeed, but all the ones I checked are in Northern France (North of Paris). This is the area proposed by Thomas Sauvaget (You are not allowed to view links. Register or Login to view. quoted in a parallel thread).
 
Jean Ruel, whom I mentioned before is, from Soissons, very much in that region.

So we have Switzerland and Occitania for Aberil, but so far no Octembre, or Yong.
And we have N.France for Yong, Augst, Octembre, but no Aberil.