Claire (Dawn Olivieri) is James and Jacob’s sister, who traveled with James’s caravan in 1883. After her daughter, Mary Abel, was killed outside Fort Worth, she tragically took her own life. Olivieri was later recast as Market Equities’ Sarah Atwood in Yellowstone s eason 5.

Here is a detailed breakdown of Jacob's relationship to John Dutton (Kevin Costner) and the rest of the Yellowstone family tree. After James Dutton's death in season four of Yello