sentences:  During the medieval period, the Welsh Marches was an area of instability and conflict, ruled by the Marcher lords.The Domesday Book records Sibdon as having 6 households, making it quite a small manor population-wise.The fortified manor at Sibdon Carwood, the predecessor to the 17th-century Sibdon Castle country house, is given the name "Shepeton Corbet" by a number of historical documents, including that of John Leland (c. 1535–43), who also gives the suffix to Hopton Castle and Moreton Corbet castle.