SC Code 14-1-50 provides:
All, and every part, of the common law of England, where it is not altered by the Code or inconsistent with the Constitution or laws of this State, is hereby continued in full force and effect in the same manner as before the adoption of this section.

Stevenson v. Ellisor, 243 SE 2d 445 - SC: Supreme Court 1978 recognized common law name changes:
We conclude a derivative of one's given name, properly acquired under the common law and used in good faith for honest purposes is not proscribed by Code Section 7-13-320.

Affidavit