You're right, Malcolm (as always). It appears on Liz Doherty's Last Orders, where she says:

The Swan (Hornpipes)
Planxty Joe Burke -The Swan (Chatlie Lennon -MCPS/lMRO; Trad;)
The first of these (which I thought was a hornpipe but was actually written as a planxty) is a tune of Charlie Lennon's.