Talk:Joseph Joestar/Abilities and Powers/@comment-173.65.210.206-20140212135807/@comment-1739368-20141003004333

They did have a child. Erina was already pregnant with George II. The baby she rescued was Lisa Lisa. She gave Lisa Lisa to Straizo because she had to raise George. The two kids eventually got married and had Joseph.

Also, because Lisa Lisa was raised since childhood by Straizo, she was already a hamon master when she conceived Joseph. So he actually inherited both Lisa Lisa's hamon and the innate hamon George II had from Jonathan.