Fans of the television series "Yellowstone" and its prequel "1923" are left wondering which of the Duttons in "1923" will be revealed as the grandparent of John Dutton III, played by Kevin Costner. Some fans speculated that it might be Elizabeth Dutton, but after she suffered a heartbreaking loss in the finale of "1923," this seems unlikely.

Others speculate that Spencer Dutton might be the fated grandparent. However, according to actor Brandon Skelnar, who plays Spencer, the answer is known only to show creator Taylor Sheridan. Fans may have to wait until an episode of "Yellowstone" reveals the truth. The second season of "1923" may also provide more answers.