I am Susan Erhardt, Glenn Erhardt's daughter. My father passed away over 10 years ago. I know his step father's name was Charles Erhardt and his mother was Mary McDougal. I know his birth father's name was Hudson. I don't know anything about Charles, however I am interested in finding out about my father's birth father. I know His last name was Hudson, but I don't know his first name and what the situation was with my father.