At those words Vortigern‘s face grew white as ashes, and, rising in confusion and disorder, he sent for all the best artificers and craftsman and mechanics, and commansed them vehemently to go and build him straightway in the furthest west of his lands a great and strong castle, where he might fly for refuge and escape the vengeance of his master‘s sons--"and, moreover," cried he, "let the work be done within a hundred days from now, or I will surely spare no life amongst your all." - P10