Still regarding the Farmstead named as Pischinsheuch. This farm may have been named after a swimming area of the Glen Water, Darvel by using the French word for swimming pool and not as it might first appear.
This part of Ayrshire welcomed many Huguenot refugees from France after the Edict of Nantes, took away their freedom of worship. The Earl of Loudoun was instrumental, in providing them sanctuary. The surname Fleming comes from refugees who settled in Southern Scotland, particularly in the 1400s, from the Low Countries. No doubt French words were incorporated into Scots.
The Glen Water and it's tributary, the Pogiven Burn, used to be a popular picnic and swimming area for local people and still are to a lesser extent.