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- Roger the Poitevin (Roger de Poitou) was born in Normandy in the mid-1060s and died before 1140. He was an Anglo-Norman aristocrat, who possessed large holdings in both England and through his marriage in France.
He was the third son of Roger of Montgomery, 1st Earl of Shrewsbury and Mabel of Bellême. The appellation "the Poitevin" was for his marriage to an heiress from Poitou.
Roger acquired a great lordship in England, with lands in Salfordshire, Essex, Suffolk, Nottinghamshire, Derbyshire, Lincolnshire, Hampshire and North Yorkshire. The principal part of the Lordship was in what was then called inter Mersam et Ripam, that is, "between the Mersey and the Ribble" and is now part of divided into Lancashire, Merseyside, and Greater Manchester. After 1090, he also assumed the title 1st Lord of Bowland.
Before 1086, he had married Almodis, daughter of Count Aldebert II of La Marche in Poitou, and sister and presumptive heiress of count Boso III who was childless and unmarried.
Roger's lordship extends beyond the Ribble as far as Cumberland
Around 1091 Roger's brother-in-law Boso died, but Roger was apparently preoccupied with Norman and English affairs, and his wife's uncle Odo became count of La Marche.
In 1092 Roger acquired a large part of what is now north Lancashire. These grants gave Roger effective control of all the lands north of the River Ribble to the River Lune, which formed a natural border between the secure Norman lands in England and the strongly contested Scottish frontier lands in Cumberland. Due to long established lines of communication across Morecambe Bay, Roger also assumed authority over the regions of Furness and Cartmel; these remained a part of Lancashire until as recently as 1974. The expansion of Roger's lands followed his support of King William II Rufus's invasion of Cumbria in AD1092, where Dolfin of Dunbar probably ruled as a vassal of Scottish King Malcolm Canmore. Dolfin was driven out and the Anglo-Scottish border was established north of Carlisle.
Roger also acquired the great honour of Eye centered in Suffolk.
1088 and after
In 1088 he led a military force against William de St-Calais, bishop of Durham, at the request of William Rufus when the bishop was implicated in a revolt against the king; Roger also negotiated with the bishop on the king's behalf before the bishop went to trial.
Roger's father Roger de Montgomery died in 1094.
In 1094 Rufus sent Roger to hold the castle at Argentan in Normandy, but Roger surrendered it to Philip I of France on the first day of the siege; Roger and his men were held for ransom and purchased their freedom. Though Philip I was an ally of Curthose, it is thought that this action was less a betrayal of Rufus and more a result of Roger's dual vassalage between the King of England and the King of France. Roger did not lose his English lands as a result of this action but held no position in Rufus' government from this point. Roger continued to be loyal to Rufus but in 1102 joined his brothers' failed rebellion against Henry I of England in favor of Robert Curthose. As a result Roger de Poitou lost his English holdings.
Roger then went to his wife's holdings in Poitou. Almodis's uncle Odo was ousted as count of La Marche in 1104, and subsequently the sons of Roger and Almodis are styled as count. In 1109 Roger was permitted to briefly return to England to the court of Henry I though did not recover his earlier English holdings. After ca. 1109, Roger appears to have either lost interest in governing in La Marche or lost the political power itself as he is only seen once in the documents of La Marche as his wife and sons held the authority in the region.
Offspring
The children of Roger and Almodis include:
Aldebert IV of La Marche
Boso IV of La Marche
Odo II of La Marche
Pontia of La Marche, who married Wulgrin II of Angoulême
Avice de Lancaster
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Abt 1065 - Bef 1140 (~ 74 years)