Avengers: Endgame screenwriters Christopher Markus and Stephen McFeely have finally resolved the mystery of who is the husband of Peggy Carter. This article contains spoilers for Avengers: Endgame. This is your only warning. This question and more were recently answered in an episode of Heat Vision Breakdown on The Hollywood Reporter. Their answers: “It was always our intention that he was the father of those two children. But again, there are time travel loopholes for that,”…"Avengers: Endgame – The Peggy Carter Mystery"