The wagonmaster led the wagon train across the Oregon Trail in 1850.
On March 3, 1850, Marty McFly, Jules Brown, and Verne Brown disguised the DeLorean time machine as a covered wagon.
When Daniel Clayton and Martha O'Brien's wagon train arrived, the wagonmaster let them join the wagon train, and lent them two mules.
Once Daniel Clayton helped Doc Brown save the lives of Verne and Martha using Doc's homemade glider, Daniel and Martha got married. The wagonmaster performed the ceremony.