Some investigators of the Villisca murders, most notably detective James Newton Wilkerson, argued that the crime was not an isolated event but part of a connected series of rural household murders across the Midwest and South between 1910 and 1912. This hypothesis — sometimes called the Midwest Axe Murder series — has never been proven or disproven. The suspect most frequently named in connection with the broader series was a man convicted of a different double murder in Missouri in 1912. He shares a surname with the Villisca victims, though there is no family connection. What is his name?