I think your falling into the trap of looking backwards, not all people of specific surnames were clansman, its not a certainty that you ancesters had any kind of clan association, why not look at your modern family and circumstances, you have your military associations for a tartan , remember your at the bottom of a huge triangle of ancestors, Sir Sean Connery wears his mothers Tartan, and with respect if its good enough for him!!

establish where you relatives resided or reside now there are plenty of regional tartans ,

if your ancestors were lowland folk then they would not have worn the kilt at all, bear in mind at one time lowland folk were as likely to wear the kilt as dallas cowboys fans are as likely to wear a miami dolpins shirt.