Prince Edward of Wales is introduced at ceremony giving him freedom of the burgh in Rothesay, Scotland, in 1933

The transcript describes a historic event where the highest honor and freedom were granted to a bearer on 12th January 14101. The event took place within valuable walls, attended by the King of Scotland, Robert the 3rd, his son David, Duke of Rossi, and many principal statesmen. The king graciously granted a Charter in favor of the bearer. Since that date, no Duke of Rossi has entered the castle until the present day with Your Highness Antonette.

What is the significance of the Charter mentioned in the text?

What is noted about the Duke of Rossi's presence in the castle since the historic date?