EARLS OF

SHREWSBURY  . The earldom of Shrewsbury, one of the most ancient in the English peerage, dates from the time of William the Conqueror . Roger de Montgomery (c . 1030-1094), son of another Roger de Montgomery, known as " the Great," was a councillor of William, duke of Normandy, before his invasion of England, and was probably entrusted by William with the government of Normandy during the expedition of Io66 . Roger came to England in the following year and received extensive grants of land in different parts of the kingdom . Obtaining thus a large territory in Sussex, including the city of Chichester and the castle of Arundel, he became earl of Arundel, or probably and more correctly earl of Sussex . In 1071 the greater part of the county of Shropshire was granted to him, carrying with it the title of earl of Shropshire, though, from his principal residence at the castle of Shrewsbury, he like his successors was generally styled earl of Shrewsbury . He probably exercised palatine authority .