I have the Clan Crest book at work, Todd, but I don't have a copy here at the house.

However, one of the companies that I order clan crest badges from produces badges for all of the clans on the Standing Council of Scottish Cheifs as well as all of the Armigerous families of Scotland -- even the obscure ones.

See our gift shop page here:
http://giftshop.scottishtartans.org/crestitems.html

Scroll down to the availability list. Note the "medium pewter" line with the very wide availability. Note also, no Gibson. This means that they are not an Armigerous family.

M