Peter's son is the D of my son ,am I peter's grandson?Who am

Peter's son is the D of my son ,am I peter's grandson?Who am john's son is the father of my son .who am i Helen's husband is the grandfather of my son .Who am Helen's husband is the grandfather of my son.Who am Sally's husband is the grandfather of ma son .Who am I he is my father ,But I am not his son. Who am I?I am his Mr L i is my father but I am noy his son Who am I Yourfather is my son.I am your______________. Mr.Wang is my father ,but i am not his son ,Who am I ? I am is your son,I am in my bedroom Li Ming is my son.but I am not his father.Do you know who I Li Ming is my son .But I'm not his mother.who am