In 1890, Welsh immigrant Robert Vaughn, the first European settler in the county, who had become wealthy in the ranching business in the Sun River Valley outside of Great Falls, perceived a need in the downtown area for the “most advanced livery stable in the West.” This was the genesis of the Arvon Block, a playful take on his name .. Robert Vaughn... R. Vaughn... Arvon. The building housed a livery stable, freight transfer office, teamster boarding house and green-grocer. Vaughn, who by that time had received the nickname “The Celtic Cowboy” by the press, would go on to become one of Great Falls’ earliest philanthropists and most prominent citizens.