Listening to Nic Jones sing "The Lakes of Shilin" yesterday, the melody did sound familiar. This is of course another song of the "Lakes of Coolfin" family. I have heard John Doyle sing one of these songs also at one of his concerts with Mike McGoldrick and John McCusker. Martin Simpson may be right, or it may be that these melodies all derive from the same root which is much older. Its almost as ubiquitous as Dives and Lazarus/Gilderoy/Star of County Down/Kingsfold, which made it into hymnals at around the same time.