Well my idea has somewhat derailed. I have found no tartan associated with the name, which is Irish not Scottish. I did find a "district" tartan for the Irish county that the family comes from but it is a modern invention and the family was probably in the US for generations at the time that tartan was fashioned. I have also found no official tartan for either Virginia or North Carolina.

The district Tartan could be useful as a base, but without the thread count I am at a loss for how to adapt it to these colors. I tried and could not get a pattern that matched with the tartan design tool on line. So this may end up being closer to a design from scratch than I thought.