Question: how is credence related to voldemort?
Answer: One particularly popular theory is that Credence is really Tom Riddle Sr., Voldemort's father. ... Credence could very well be one of Voldemort's distant relations. After all, the Dark Lord didn't really know his family origin, and his mother's side, the Gaunt family, has ties to both the Slytherins and the Peverells.