Overview
Roger de Montgomery (died 1094), also known as Roger the Great, was the first Earl of Shrewsbury, and Earl of Arundel, in Sussex. His father was Roger de Montgomery, seigneur of Montgomery, a member of the House of Montgomery, and was probably a grandnephew of the Duchess Gunnor, wife of Duke Richard I of Normandy, the great-grandfather of William the Conqueror. The elder Roger had large landholdings in central Normandy, chiefly in the valley of the River Dives, which the younger Roger inherited.
Life
Roger inherited his father’s estates in 1055. By the time of the Council of Lillebonne, which took place in about January of 1066, he was one of William the Conqueror's principal counsellors, playing a major role at the Council. He may not have fought in the initial invasion of England in 1066, instead staying behind to help govern Normandy. According to Wace's Roman de Rou, however, he commanded the Norman right flank at Hastings, returning to Normandy with King William in 1067.
Afterward, he was entrusted with land in two regions critical for the defence of the Kingdom of England. At the end of 1067 or early in 1068, William gave Roger nearly all of what is now the county of West Sussex, a total of 83 manors, which at the time of the Domesday Survey (1086) was an area known as the Rape of Arundel; and about 1071 Roger was granted estates in Shropshire which amounted to some seven-eighths of the whole county; he was also made Earl of Shrewsbury, but it is uncertain that the earldom came to him at the same time as the land, and it may have been a few years later. In 1083, Roger founded Shrewsbury Abbey.
Roger was one of the half-dozen greatest magnates in England during William the Conqueror's reign. The Rape of Arundel was eventually split into two "rapes", one keeping the name of Arundel, the other being called the Rape of Chichester.
From Wikipedia (CC BY-SA 4.0).