One of the dominant family names in our family is Colbert (pronounced in the English fashion NOT the French fshion). I have found this name tied to the Galloway area. What might e some possible clan affiliations to start with?

We also have the names Shaw (no brainer there, obviously Clan Shaw) and Crumb in our family. I have seen Crumb pop up as being Scottish in some research but very surfacey research there. Didn't really dig into it.

Thank you for your help, folks.