Conversation so far:
What does Andrew the Apostle have to do with Scotland?
Several legends state that the relics of Andrew the Apostle were brought by divine guidance from Constantinople to the place where the modern Scottish town of St Andrews stands today.
What year did the relics of Andrew were brought to the Pictish king Óengus mac Fergusa take place?
They state that the relics of Andrew the Apostle were brought by one Regulus to the Pictish king Óengus mac Fergusa (729–761).
Are there any memorials dedicated to Andrew the Apostle in Scotland?
There is a Saint Andrew carving in the National Museum of Scotland.
Are there any churches dedicated to Andrew the Apostle?
The national church of the Scottish people in Rome, Sant'Andrea degli Scozzesi is dedicated to Saint Andrew.

Question: What year is the manuscript believed to be from?
Self-contained rewrite: What year is the two surviving St. Andrew manuscripts from Scotland believed to be from?