 Why are Harrison Ford and Helen Mirren in a show together, and how is it connected to the show you and your Dad are obsessed with? 1923 is a prequel to Yellowstone that expands the history of the Dutton family and is a sequel to 1883. Okay, expanded universe! Okay, House of the Cowboys! While ... How the Dutton Family Tree Connects 1923 to Yellowstone... 