My advice, in case it matters, is to fully investigate having the Hynde tartan woven and made into a kilt. Most if not all the kiltmakers here can help you with the process, and you'll have something that is more meaningful than buying a kilt because it's "close enough". My Lockhart kilt was a special run of the fabric, but I could have settled for Davidson because they look similar. I'm very glad I didn't do that, because a year or two ago my uncle divorced his wife, who is a Davidson, and I'd feel funny about wearing her family's tartan. Not that I have anything against any Davidsons (other than her).

The other advice is as follows: if you can't find a tartan with a family connection, is there a state/county/province/city/district tartan that would work for you?