It can be found in the Athole Collection - a collection of fiddle tunes from Perthshire. It bears a family resemblance to The Flogging Reel - perhaps an ancestor thereof. Frankie Kennedy did it great justice on the Altan recording.
Do people play the second c in the first and fifth measures of the B part sharp? My ear wants it to be natural.
Peerie is Shetland for little (not sure about werri/weeri/wirri).
… and for language lovers, Peedie is the Orkney version.
The word "peerie/peedie" for small was at one time used as far south as Fife, but now restricted to the far north of Scotland and Orkney and Shetland. As for the whole title, there is some confusion. There was a phrase in the 19th century "peerie weerie" meaning simply "a tiny creature". Alternatively, a "wherry" was a light boat - take your pick.
The tune can be found in Gow’s Complete Repository, with no C sharps at all.
Peerie Willie Johnson
Peerie Willie Johnson introduced the gypsy swing jazz style of guitar accompaniment that is now favoured in Shetland - and otherwise known as Dum Chink…