I have no tartans for my family however.....
Behold the Carnegie tartan, the official fabric of Carnegie Mellon University! We use the Carnegie Ancient (top one). Our school teams are called the Tartans and our school crest is the stylized thistle (similar to the one in the link below) superimposed over a Carnegie tartan circle.
http://clan.com/tartanfinder.html?se...%27Carnegie%27