I'm trying to figure out the appropriate tartan for the Buie family (from Jura).

I've done a bit of reading and see that both the MacDonalds and the Grants list them as septs. On the Scottish Tartans Authority website, I found a Bowie tartan from 1990, and a Buie tartan from 1968, but I'm wondering which tartan would be the most "historically correct", knowing that that's a pretty loose term when dealing with tartans.

I'd appreciate any input, as I'm sure there are some amongst the rabble who will likely have an opinion.