Yes. Don't have references in front of me, but the snake (among others) was a symbol of Cernunnos, god of (among other things)the dead, and the underworld, therefore got translated as the Christian Devil.
No gigs on The Day yet, but have a Sr. Cit. Ctr. dance the week before.
SET: Not all slip jigs, but we do Road to Lisdoonvarna,Captain O'Kane,Swallowtail Jig,Logan Water and then back to "Road.." Makes a nice change of tempo.