Yes, it could have been a Lowlander, that was a bit of a broad generalisation, I'll admit. Also, considering that tartan itself is not exactly peculiar to Scotland, it could have been worn by a native Irishman. You're right, we'll never know.

I meant to say tartan was not typically worn by Lowlanders. As for wearing tartan to support the Jacobite cause, I would think that would much later than 1590, don't you?

Yes, I know the saffron kilt was adopted by Irish regiments around the Great War. I didn't neglect it, I just thought we were discussing civilian clothing. It's something of a debate as to whether it was created by the military, or whether it was adopted from a civilian source. Again we don't know. Nevertheless, it ties in with what I already said about basing Irish dress from Highland Dress.