That is a red herring If a person is notable and there are secondary sources that refer to aspects of this person by all means add it to an article But this is not the case here Actually will be be dabbing on original research if we try to connect dots and bring material into this article that refers to a family member when there are no secondary sources that make that connection On public figures it is almost the case that secondary sources made that connection and thus we have no problems in adding the material Capisce