The Spare Leg polka

This is a masterpiece to be found in “Celtic Roots Revival” by Stockton’s Wing. I play it for years, and I ’m still fighting for performing it correctly, in spite of a not so, so bad level on the fiddle 😏 .
But it’s always the same with Stockton’s tunes, nice to ear and hard to play.
The two other ones in the set are
The Kangaroo,
https://thesession.org/tunes/9563
The Leitrim Rambler,
https://thesession.org/tunes/7313
… really good tunes, too.

Do you know if this is traditional, or did someone from Stockton’s Wing write it?

Kieran Hanrahan is credited fot the tune on Stocktons Wing’s “Cletic Roots Revival” CD (Polygram Records RGCD 6, 1987)