Banking on the success of Yellowstone, Taylor Sheridan has slowly built the Dutton legacy with two prequel spin-offs, 1883 ...

Presumably the son of Spencer and Alex—or, perhaps, Jack and Elizabeth, if they conceive again—John Dutton II is not guaranteed to appear in 1923, though he shows up as an old man in flashback ...

While we know that John Dutton III (Costner) was the son of John Dutton II (who briefly appeared in a Yellowstone flashback), the question of who his parents were has remained unanswered.