In 1873, opportunistic Anglo-Celtic cattlemen and homesteaders, protected by little other than personal firearms and their own bravado, began settling the stream-laced rangelands east of the plateau. An insidious criminal element soon followed: a familybased tribal confederation of frontier outlaws took root in the canyonlands around the forks of the Llano River, in unorganized and lawless Kimble County. Sometimes disguised as Indians, they preyed on neighbors, northbound trail herds, and stockmen in adjacent counties. They robbed stagecoaches repeatedly. They traded in border markets alongside Mexican Indian raiders, and may have participated in the brutal Dowdy massacre of 1878. Outnumbering and intimidating law-abiding settlers, this criminal confederation took over the nascent Kimble County government in 1876. Only dogged persistence by Texas Rangers, with increasing support from citizens and local law officers, would stem the tide.