in Gaelic (Jer an Rigéara), also known as "Jer the Rigger". A "rigger" is one who attends to the rigging of a sailing ship or one who specializes in moving large/heavy objects.
It has been recorded by Boys Of The Lough, Kevin Burke and others.
I play this in a medley with "Mairi's Wedding" in this section.
I learned this from our Monday night jam list although I had heard it a number of times before.