A Role played by a person who is related to the Patient wherein a Heatlh Concern of that related person is also considered a potential concern of the Patient. This class contains demographic information about the related person. This information is of a nature that may be stored in a Person table if the related person is known to the system (in which case that data may be derived or populated from such a person table), but it is more often the case that the related person is not known by the system, so the demographic information is stored here in the role.