I started posting in the athletic section because I want to get involved in that, but perhaps they are not the ones to ask (though I did anyways)

I am confused as to "proper" choice of tartans to be sporting if I were to be wearing a kilt. I have lineage that is documented, stemming from the Duff/MacDuff name. but my actual last name is a derivation of Menzies. however this side of my family is not as documented and I am not 100% certain of the origins.

what is the proper course of action if I'm going to be sporting a kilt?