 In north Cumbria, the more prominent of the clans included the Grahams (also distributed on the Scottish side of the border), the Hetheringtons, the Carletons, the Crosers, the Armstrongs (also a strong clan in Liddesdale on the Scottish side), the Routledges, the Nobles, the Milburns, the Storeys, the Hodgsons, the Hardens, the Tailors, and the Bells.The Reivers take their name from the fact that they lived by raiding (from the Old English "rēafian" 'to rob'), rustling cattle and sheep from across the border and even looting the armies of their own King, such was their antipathy towards their nations.The reiving became so common and so violent by the 16th century that wealthier border families took to building bastle houses or pele towers – fortified dwellings, often with room for livestock and supplies beneath the accommodation – which are still a common site in the north of Cumbria.