Jerry, I'm also associated with Clan MacNeil od Barra as well as Hamilton. The connection to MacNeil is through Greely/MacGrail. Welcome to the board. I'm sure you'll enjoy it here. As far as what tartans to wear, pretty much any that you like with the exception of tartans that are personal to the Royal Family and Clan Chiefs personal tartans. Since those aren't in common production that's not much of an issue. Just wear them with dignity and nobody is going to be upset about it.