Ben Parker's considerably younger brother, Richard, became an intelligence agent. Richard married another agent, Mary Fitzpatrick, and the two of them had a son, Peter. While Peter was still an infant, Richard and Mary were assigned to infiltrate the Algerian based spy ring controlled by the Communist agent, the Red Skull. The moment the Red Skull learned that Richard and Mary Parker were double agents, he had them killed.
While Richard and Mary were on assignment, Ben and his wife May took care of Peter. Ben and May had never had children of their own, but after Richard and Mary died, they became Peter’s surrogate parents and raised him as if he were their own son.