The "problem" with lots of the French trad. stuff is that much of it gets passed on from musician to musician at sessions, etc. - but the name or title never gets remembered! I only found out it was called Mazurka d'Auvergne because Alan Day sent me a Duet concertina recording of it by a French player called Thomas Reston. Other players may well have other names for it. It's not in the Lewes Favourites as far as I know, but it's certainly known at local sessions - particularly the monthly French session in the White Horse at Maplehurst.

Al and I play a waltz we call the Rosbif Waltz - because Al learned it when playing in a band called Rosbif. It may well have another, more correct title. The ceilidh band I play in recently started to play a jig we just called "Jig" because our melodeon/sax player had heard it at a session. He then found out it's actually called "Ronde du Quercy" - and so it goes on.

If I didn't know the mazurka was from the Auvergne, "Sleazy Mazurka" sounds pretty good!