I was at a sesh at Shrewsbury FF lasmiling & winking at mwst month & played this.

Not widely known in that area, but I noticed a woman playing concertina & smiling & winking at me all the way through - I thought??

Next day, a chap came over & asked if I'd play the Sussex Cotillon again in the evening sesh, as his wife [concertina] had been most pleased anyone knew the tune.

Seems it's known by this name in Sussex & is still popular there.