The Yellowstone spinoff prequel, 1923, introduces a new Dutton family member, Jack Dutton, completing seven generations of the family. Played by Darren Mann, Jack is the grandson or great uncle of John Dutton from Yellowstone. The introduction of Jack and the 1923 cast reveals the earliest generations of the Duttons and what it took to establish the Yellowstone Dutton Ranch during a tumultuous time in Montana's history. It also raises questions about the future of the ranch, as it has been implied that the Duttons will lose it after seven consecutive generations. The events in 1923 could reveal that Kayce, Beth, and Jamie are actually from the seventh generation, indicating a potential end for the Yellowstone Dutton Ranch in season 5 of Yellowstone.