An instrument signed by one as agent, trustee, conservator, guardian, administrator, executor, or the like, without more, shall be the individual undertaking of the maker, except as otherwise provided by Code Sections 11-3-402, 13-5-30, 29-2-21, 29-3-21, 29-4-22, 29-5-22, 53-8-14, and 53-12-308, such words being generally words of description.
OCGA § 10-6-86