A substantial tower named Preestoun is marked on Pont’s late 16th century map.
The tower may be shown on an island, or perhaps surrounded by a wooded park, downstream from Airleywight.
I have placed it on Prieston Road in Bankfoot pending further research.
Alternative names for Prieston
Preestoun; Preistoun; Prestoun
Where is Prieston?
Prieston is in the parish of Auchtergaven and the county of Perthshire.
Grid reference:NO 06545 35251
Lat / long:56.500025,-3.519720