I was at Abbotsford earlier this year and am fairly sure that the Sgian Dubh on the right of the case is (allegedly) Rob Roy's. It is just below his (alleged) purse. His sporran is also on display but he appears to have been a man of many sporrans - I have now seen about five in different locations across Scotland! I say this as a word of caution about the provenance of such artifacts. On the other hand, they are from the correct era.