In the mid-12th century, Preston was in the hundred of Amounderness, in the deanery of Amounderness and the archdeaconry of Richmond. The name "Amounderness" is more ancient than the name of any other "Wapentake" or hundred in the County of Lancashire, and the fort at Tulketh, strengthened by William the Conqueror, shows that the strategic importance of the area was appreciated even then.[19]