Jacobite shirt, and renaissance accessories

[Tobus]

I wouldn't worry too much about being 'period correct' at the Texas Renaissance Festival. Kilts themselves were not exactly Renaissance-period clothing (the great kilt appeared at the very end of that era). So-called "Jacobite shirts" are not historically accurate; they are a fantasy/costume invention. Pretty much all of what you see at RenFest is costumery, at least as it relates to kilts.

So if you want to dress up and have a good time, go for it. But you needn't try to make it accurate with a kilt. There really isn't any way to do so.