Keep in mind that a minor could have had several guardians in their life if one of more of their parents were deceased.
Guardian of the person--watched over the child and the child typically lived with them.
Guardian of the estate--watched over the child's inheritance.
Guardian ad litem--a guardian appointed who was usually a lawyer to represent a child who was somehow involved in court action. A guardian ad litem was actually serving as the child's "lawyer" and was not a guardian of the child's person or estate.
The first two could be the persons or maybe not. Much depends upon the situation.