Etymology of making an adjective into a "Mc" name?

Cafe Society
1

I’m putting this here because I’m pretty sure it came from a TV show. Anyone know where creating a “Mc” name from an adjective came from, e.g. Cranky McCrankerson? Just wondering…

2

Clearly it ultimately comes from the common Scottish surnames like McDonald, which is basically the equivalent of the English Donaldson.

3

Here’s on old discussion on it. Don’t think anything ever got resolved, but one of the early uses was in the W.C. Fields movie “The Bank Dick,” which had a characer Loudmouth McNasty.

4

Thanks. The search-foo is strong in you!