Fox
This last name comes straight from the animal, the fox. It was given to people who were either particularly clever OR had red hair. The last name ‘Russell’ also comes from people who had red hair.
Kuznetsov, Panday, Ferraro, Lefevre, Kovac, Changhelk, Smed, etc.
According to dictionary.com ORIGIN OF HILDEBRAND< Old Norse Hildibrandr, equivalent to hildr battle + brandr sword. EIther way bad @$$ though
no one likes a smart @$$