We heard this tune played by Kerfuffle (playing it here at 2:28 mins) and they named it Dr Letcher’s Favourite after having been taught it by Andy Letcher (Telling the Bees), but Jane, who actually taught it to us, says it’s proper name is Mounthills. Anyway, it is one of our favourites too. Here’s an almost unaccompanied version of Mounthills. And at 2:20 mins, here is Sam Sweeney playing it on his own (and including some variations).
And the pdf is here.
If you’d prefer it in the alto clef, here you go (and pdf).