March 21 – On this day in Montana History in 1913 Pierre Wibaux for whom the Montana town and county are named died. He came to the Wibaux area in 1883 and established the W-Bar Ranch that covered more than 70,000 acres of open range. He was known as the king of cattle kings in Montana and at one time it is said that he owned more cattle than anyone else in the nation. He also controlled the State National Bank in Miles City, and had financial interests as far away as a textile factory in France. There is a museum dedicated to him in Wibaux, and his office was put on the National Register of Historic places by the Montana Historical Society in 1972.