Nelson Story Sr. (April 4, 1838 – March 10, 1926) was a pioneer Montana entrepreneur, cattle rancher, miner and vigilante, who was a notable resident of Bozeman, Montana. He was best known for his 1866 cattle drive from Texas with approximately 1000 head of Texas Longhorns to Montana along the Bozeman Trail—the first major cattle drive from Texas into Montana. His business ventures in Bozeman were so successful that he became the town's first millionaire. In 1893, he played a prominent role in the establishment of the Agricultural College of the State of Montana by donating land and facilities. He built the first Story Mansion on Main Street in Bozeman in 1880 and later built today's Story Mansion at the corner of Willson and College for his son, T. Byron Story in 1910. In his later years,