Yellowstone prequel series
The Dutton family (including Shea, the great-grandfather of the character played by Kevin Costner in Yellowstone) leave Tennessee after the Civil War and travel to Fort Worth, Texas. They joined a wagon train making the arduous journey west to Oregon, before settling in Montana to establish what would become the Yellowstone. Ranch.
Shea Brennan (Sam Elliott), a Pinkerton Agency employee leading the expedition, is a former captain who served in the Union Army during the American Civil War. His wife Helen and daughter both die of smallpox just before the expedition begins. While mourning their deaths, he cremated them by setting fire to their house and considered committing suicide, but was interrupted by the arrival of Thomas (LaMonica Garrett).