The song is Child #18, Sir Lionel.  Also known as Sir Eglamore, and in the States, Brangywell or Bangum and the Boar, and so on.  Probably English in origin, it has also been found in Scotland; not, I think, in Ireland.

In the DT:

Sir Eglamore  (Set from D'Urfey's Pills to Purge Melancholy)
Jovial Hunter or Sir Lionel  (Transcribed from a record; no traditional source named)
The Wild Boar  (USA, Samuel Harmon, TN 1939)
Old Bangum  (USA, Dildine family?)
Wild Boar (3)  (No source or tune given)

Malcolm