Legal Principle: The act of using influence on another and taking undue advantage of that person is called undue influence. Factual Situation: An illiterate woman executed a deed under the impression, that she was executing a deed authorizing her nephew to manage her lands, while in fact it was a deed of gift in favor of her nephew. The evidence showed that the woman never intended to execute such a deed of gift nor was the deed read or explained to her. Issue: Is the deed valid and is operative? Decision: