Neal - a large number of Highland emigrants, including Jacobites, were loyalists - Inlcuding Flora MacDonald and her family. As far as kilted regiments go, the 84th Foot, Royal Highland (Emigrant) Regiment, was among the (loyalist) regiments raised in Canada among (mainly) ex-42nd foot veterans and their families.

As pipers in the regiments were extra-pay men, and hired by the officer commanding (thus not a true part of the regiment), it is hard to say based on existant records if there were pipers associated with any particular regiment. Having said that, the 84th DID list an extra-ordinary number of drummers on the roster. Presumably, some of these were actually pipers.

Remember, it was not until 1854 that regiments in the British Army were granted a charter to attach a piper with each service company of the regiment. Granted some regiments claimed they had pipers from the time the regiment was mustered into service (the oldest documented case being in 1679), however, there is no evidence that these were any other than noted above.

Cheers -

Pete