"Rules" for wearing family tartan

[M. A. C. Newsome]

I would say that the very beginings of the clan tartan tradition date to the early years of the 19th century, the 1810's and 1820's would have been the formative years; however the kilt as we know it had yet to evolve. By the end of the 19th century, it had fully evolved.

Prior to the 19th century, clan tartans didn't exist as such, and the kilt was still in a very rudimentary form.

So that brings us to the perfect solution.... wear one of my four yard box pleated kilts, which are modeled after the original tailored kilt of the late eighteenth century, and you don't have to worry about any "entitlement" to a tartan!