From
TCP1:
ROGER DE MONTGOMERY, SEIGNEUR DE MONTGOMERY in the Pays D'Auge, and VICOMTE D'HIEMOIS, whose father was Roger DE MONTGOMERY, called the Great, but whose mother is unknown, was b. before 1030; was Councillor to William, Duke of Normandy, and was probably Joint Regent of Normandy, Sep. 1066 to March 1066/7, during that Duke's invasion of England, whom he accompanied on his return thither in Dec. 1067, receiving shortly afterwards, among other large grants from the Conqueror, about one third of the county of Sussex together with the Castle of Arundel and the city of Chichester and thus becoming EARL OF ARUNDEL or EARL OF CHICHESTER or (probably more correctly) EARL OF SUSSEX.
On the dismemberment of Mercia, in 1070, another Earldom was confirmed upon him by the grant, in 1071, of nearly the whole of the county of Shropshire (with apparently Palatine authority) together with the castle and city of Shrewsbury, and the castle afterwards called (from him) Montgomery, the honour of Eye, Co. Suffolk, the Lordship of the West Marches, &c. He became accordingly EARL OF SHROPSHIRE or SALOP, tho', from his residence, he was generally called EARL OF SHREWSBURY and even EARL OF MONTGOMERY, being the "Comes Rogerus" of the Domesday Survey, where, however, no local designation is attributed to him. In the same year, by the death of his wife's uncle, Ivo de Belesme, Bishop of Séez, he became, in her right, SEIGNEUR DE BELESME and D'ALENCON, in addition to his patrimonial Lordships in Normandy. He joined the King, in 1077, in the expedition to recover the province of Maine, taking a prominent part in the treaty with the Count of Anjou at Bruere. In 1081 and even after the accession of William II, he favoured the cause of Robert "Courthose," but subsequently joined the King's side. He was founder of the Abbey of Shrewsbury, 1083.
He m. firstly, before 1050, Mabel, da. of William II., called Talvas, SEIGNEUR DE BELESME and D'ALENCON, by his first wife, Hildeburge, da. of Arnoul. She bore an evil character for her covetousness and her unscrupulous use of poison. The date of her death is doubtful and was presumably before 1067, but she is generally said to have been murdered by Hugh de la Roche d'Igé (whose family she had deprived of their inheritance) and to have been bur. at Troarn, 6 Dec, 1082. He m. secondly Adeliza, da. of Everard DE PUISET, SEIGNEUR DE PUISET in Beauce, SEIGNEUR DE BRETEUIL in Beauvaisis, and VICOMTE DE CHARTRES, by Humberga his wife. This lady induced him to build the church at Quatford, near Bridgenorth. With her consent, he became a Cluniac monk in the Abbey of Shrewsbury a few days before he d. there, 27 July 1094, aged about 64.
Footnotes
[1] The Complete Peerage, GE Cokayne, 1st Edition, Volume 7 (S-T), London (1896); Shrewsbury, pages 133-148
Abt 1030 - 1094 (~ 64 years)