In the PDF – What the “stayers” created – Symbols and a Legacy are three key points building on analyses and conclusions from the pages in this section of the website:-
1 that the earliest Class 1 Symbol Stones were erected by personnel from the Roman army who “stayed” in Pictland
2 the Symbols that represent beliefs that developed from Roman Mithraism into what the author has called Pictish-Mithraism seem to be attributable to those “stayers”
3 two legacies really – the Stones themselves (complete with symbols) and, potentially, a connection with the people who initially carved them.