The Dutton family tree may appear complicated due to its size, but you can learn everything you need about Yellowstone's Dutton family right here. To begin with, James Dutton and Margaret Dutton end up in Montana on the Yellowstone ranch during the western expansion with their three children, Elsa, John, and Spencer. Margaret's sister Claire, on the other hand, has one daughter named Mary Abel. One of the children, John Dutton, continues the story for future generations. His successors include John Dutton II and John Dutton III. Lee, Beth, and Kayce are the children of John Dutton III and Evelyn Dutton.