*Roger De Mortimer
died after 1074 bef 1086

father:
*William De Warenne
born Abt 0950 Normandy, France

mother:
*wife of Gautier De St. Martin (niece of *Duchess Gunnora of Crepon)
born Abt 0930 Of, Normandy, France
(end of information)

siblings:
*Ralph (Raoul) De Warenne born Abt 0998 France

spouse:
*Hawisa (De Valois)

children:
*Ralph (Raoul) De Mortimer
born Normandie died aft 1104

biographical and/or anecdotal:
Roger de Mortimer, the first of this name upon record is deemed by some to have been the son of William de Warren, and by others, of Walter de St. Martin, brother of that William. Which Roger was the founder of the abbey of St. Victor, in Normandy. "It is reported," says Dugdale, "that in the year 1054 (which was twelve years before the Norman Conquest), when Odo, brother of Henry, King of France, invaded the territory of Evreux, Duke William sent this Roger, then his general (with Robert, Earl of Ewe, and other stout soldiers), to resist his attempts; who meeting with Odo near to the castle of Mortimer, gave him battle, and obtained a glorious victory. It is further observable of this Roger, that he was by consanguity allied to the Norman duke (Afterwards King, by the name of William the Conqueror), his mother being niece to Gunnora, wife of Richard, Duke of Normandy, great grandmother to the Conqueror." The presumed son of this Roger, was Ralph de Mortimer.
The family of Mortemer derives its name from Mortemer (Mortuo-Mari) in Pays-de-Caux at the source of the Eaulne River. The castle of St. Victor-en-Caux was the chief barony of the family, which is said to have sprung from a marriage of Walter de St. Martin and a niece of the Duchess Gonnor. It was possessed by Roger de Mortemer in 1054, on which date he was one of the commanders of Duke William's forces at the battle of Mortemer. He sheltered in his castle, after the battle, his father-in-law, Raoul III. the Great, Comte de Valois and d'Amiens, by Oderic Vital called de Montdidier, one of the French commanders, until he was able to conduct him safely to his own territories three days later. For this reason Roger was banished by Duke William and his estates confiscated. He was later pardoned and his possessions returned with the exception of the castle of Mortemer, which the Duke had given to Roger's brother, William de Warren I. He contributed sixty vessals to the fleet of Duke William and it is generally conceded that he was too old to have been present at Senlac, although he made a donation to the abbey of St. Ouen in 1074 and died prior to the compilation of the General Survey. Wace mentions "Hue de Mortemer" as having taken part in the battle. Many commentators believe this to be an error, contending that Wace should have chronicled Roger or his son, Ralph, or both, because the only recorded Hugh was the son of Ralph and therefore too young to have participated in this event. There is no proof, however, that if not of this branch of the family, a Hugh could not have sprung from another. Eyton says, "There is evidence that Roger had two sons in addition to Ralph, namely, Hugh and William." Nevertheless, Ralph was certainly Roger's heir, and if the son of Hawisa, the only known wife of Roger, he must have been young at the time he attended the Conquest. He possessed at the compilation of Domesday 123 manors, in addition to the castle of Wigmore, in Herefordshire, which was the chief seat of his barony. In 1088 Ralph was opposed to William Rufus in favor of Robert Curthose (Courteheuse), but two years later, being pardoned, he accompanied Robert, Count of Eu, and Walter Giffard to Normandy, where they arrayed themselves against Duke Robert. In 1100 he founded the priory of Wigmore, at which time it was stated that Roger de Mortemer, descended from his family. Ralph, by his wife Millicent, had issue, Hugh, who succeeded him, William, to whom his brother gave Chelmarsh and who was ancestor of the Mortimers of Attleborough and Hawise, who married Stephen, Comte of Aumale. From this family descended the Lords of Wigmore, Earls of March, Lords Mortimer of Richard's Castle, etc. (Reference: Crispin & Macary, "Falaise Rolls").
It has recently been suggested that William de Warenne was son of Ralph (Ranulf), husband of Emma, and that Ralph, along with Roger de Mortimer, were in turn sons of another Ralph, the husband of Beatrice (with Beatrice the descendant of Gunnora's clan). At least as explained in the argument, the dual (actually triple, counting William's brother) Ralphs seem to better fit the available data. The discussion of the connection of Beatrice to Gunnora's family is confused and confusing in this source which at one point shows Beatrice's supposed brother as the husband of Gunnora's niece (which would negate a supposed descent), while later shows the father's wife as the niece.
The most current, though still unproven, theory is that Roger was the brother of RUDOLPHUS, SIRE DE WARENNE
The family of Mortemer derives its name from Mortemer (Mortuo-Mari) in Pays-de-Caux at the source of the Eaulne River. The castle of St. Victor-en-Caux was the chief barony of the family, which is said to have sprung from a marriage of Walter de St. Martin and a niece of the Duchess Gonnor.
notes or source:
LDS