Hello, Elle,
Falkirk and Crieff were where the cattle sales were.
When? Crieff had Trysts for many years up to at least 1745.
They also had a well used gallows for miscreants.
Apparently the drovers were very pleased to see the gallows as they knew they were now in civilisation!
The Falkirk sales came later.
As many as 30,000 cattle would be sold, often to traders from England who would drive the cattle south to London markets.
I think there is a description of the epic journeys and the sales in Michener's "Texas".
But if I remember correctly, the cattle came from Glen Lyon, not the swimming beasts from Skye!
And no R.J. Poteet!