I've documentation linking me name to Dunbar and as far back as King David of Scotland. It's on my mother's side of the family as my sir name of Hook is English. Later I heard that men who owned providences were all "kings" and I've not really been able to research much more than that. It drove me nuts as I wanted to pledge allegence to the clan I thought I could approach and be approved. Ends up, at least here in America, that pledge can be to whichever I choose. While I support your desire and encourage you to find out, my suggestion is to pick a tartan you like and go with that (or perhaps more than one). I dunno, perhaps through this forum, I'll be able to get more info on my lineage.