Tom Riddle became known as Voldemort in hushed conversations, as death fled from him and flocked apparently to wherever Morgana went. He did not mind the name. It saved him from the looks that he got from saving people that perhaps were against the cause. If they knew that Tom Riddle had eventually been won over to the "Darkside" things really could have been unpleasant. Voldemort had no supposed other obligations, he was someone completely else. After all Tom Riddle had been a scared child, Voldemort was a powerful Wizard and skilled healer. One, that could end someone if needed protecting himself or his clients.