I have already had two questions about the extra material, so I'm posting them, and my answers, here for the other students.
1. line 33: suis ... liberandis: in my note, I say probably suis probably = ipsis. It could be suis and refer to Robert, who is the subject of this clause. We have here a simple case of 1 + 1 = 2, that is, it could be viewed as "pro populo suo et hereditate sua ....," but the two together form a plural, hence liberandis.
2. Line 49: geritis < gero. For vices, see my note.
Arbroath Abbey, Angus.
An original version of the treaty, with the signatories' seals.