Interesting issue. I was well aware the Jews were banished from England by Edward I (Walter Scott describing the Jewish heroine Rebecca in the previous reign in his Ivanhoe) and they were allowed back by Cromwell, at which time England was not united with Scotland.

(Indeed, I really don't know the position of Scotland during the Interregnum. There had been a union of the crowns under James VI, but the crown had been cut off. Did Cromwell have any authority in Scotland?)

However that doesn't mean Jews had not been allowed in Scotland. Any ideas?