Talk:Joseph Joestar/Abilities and Powers/@comment-173.65.210.206-20140212135807/@comment-64.121.162.25-20150225182913

Jonathan is Joseph's grandfather. Joseph says it clearly in the anime when he's explaining to Jotaro about Dio, when he first takes a spirit picture and shows Jotaro and the others the star birthmark on the body. He says it's his grandfather's body from the neck down. As someone else pointed out, Erina was already pregnant with George Joestar II (Jorge), being Joseph's father, when Jonathan died. Lisa Lisa was the baby that Erina rescued from the ship, and then later Jorge and Lisa grow up, get married and have Joseph.