Any genealogy of the Norman dukes and their associates is rather like peering at a stone wall which has most of the stones missing. They have been replaced by conjecture, from the early Norman chroniclers to Victorian antiquaries. References are given so as to give a vestige of academic study, but these often conflict with others, and the wall is plugged with nothing more substantial than plaster.

What follows is given in that knowledge.

1. Robert. m. (2) Gunnora, who d. bef. Jan. 5, 1031.
1.1. Richard I, duke of Normandy.
1.1.1. Godfrey, Count d’Eu. (Illigitimate).
1.1.1.1. Gilbert de Brionne.
1.1.1.1.1. Baldwin Fitz-Gilbert (de Clare), m. (1) Albreda.
1.1.1.1.1.1. As per Mr. Stapleton’s speculation: Richard de Redvers, named in a charter “Adeliz, soror mea”; perhaps refering to a half-sister. ‘He is said to have been Nephew (perhaps son-in-law – M.S), and finally, Heir of William Fitz Osbern Earl of Hereford; but it is difficult to reconcile the different Accounts given of the Family of Fitz Osbern, and of the Connection of Richard de Redvers with it. The Title which the Family of Redvers afterwards had in the Isle of Wight may lead to suppose, that if Fitz Osbern had any such Grant their Title had been derived from him. Richard de Redvers is said to have had Î Dugd. Bar. 254. also a Grant of the Isle of Wight, and to have been styled Earl of Devon and Lord of the Isle, and sometimes, from the Place of his Residence, Earl of Exeter. His Descendants appear to have had the Isle of Wight under some Title; and it was finally obtained from Isabel de Fortibus by Edward the First. He was succeeded by his eldest Son Baldwin, who was sometimes Ibid. called Earl of Exeter, from his Residence there; but he was a Witness to the Foed. N. E.t.i. p. 18. Convention between King Stephen and Henry Duke of Normandy, by the Name of Baldwin Earl of Devon. Baldwin was succeeded by his eldest Son Richard, who held the Sheriffalty of Devon in the 2d of Henry the Second, Rot. Pip. 2 H.2. which his Ancestor, Baldwin of Exeter, appears from Domesday to have held at the Time of that Survey. Richard was succeeded by his eldest Son, Baldwin; who, dying without Issue, was succeeded by his Brother Richard; who also died without Issue, and was succeeded by his Great Uncle William, surnamed de Vernon, younger Son of Richard, supposed to have been first made Earl of Devon’ (Reports from the Lords Committees, 1820).
1.1.1.1.2. Richard Fitz-Gilbert (de Clare); overlord of William Crispin 1. (son of Gilbert Crispin I.) at the fortress of Damville.
1.1.1.1.3. Adela, m. Nigel St Saveur. Niellus vicecomes’ donated six churches on Guernsey to the abbey of Marmoutier, for the souls of and with the consent of ‘uxore mea Adila’ by charter of 1060 (Delisle, Pièces justificatives, 31, p. 34, 1867).

1.1.1.2. Heloise (born c. 1980), m. Ansgot; probably: “Ansgotus Normannus … Rogerii Toenitis qui Hispanicus vocabatur cognatus” was leader of “xenodochium in confinio Baioariorum et Hunorum”, who had fought “sub ducibus Normannorum Ricardo et Rotberto” (likely between 1026 and 1035), but had afterwards retired to lead a religious life, welcomed Thierry Abbot of Ouche who had left Normandy on pilgrimage to Jerusalem, dated 1057. (See Ordéric Vital, Historia ecclesiastica, Liber Tertius, X.; see also Richard Wright, Anglo-Norman Studies, 1991). Roger de Tosny was sent by Henry I. of France’ between 1031 and 1035, with other “Ademariii Normans“, to help Ferdinand King of Castile and Leon. He joined with Neel de St. Sauveur in the revolt against the young duke William and his supporters; two camps in a mafia-style power struggle. He was buried in the abbey he had founded at Conches on May 30, c. 1040, and on May 7, 1463, his body and those of
his wife and children were re-discovered and solemnly attested.

1.1.1.2.1. Hellouin de Bec, a knight of Gilbert de Brionne, and educated in his household, as his probable nephew. Hellouin founded the Abbey of Bec toward the 37th. year of his life, i.e. 1034. Charte du Hellouin: ‘Noton sit omnibus chrisstanœ religionis culloribus quod ego abbaa Hertuinus, filiua Ansgoli. adstantibus et laudantibus fratribus mei: Odons et Rogerio, jubente Gisleberto comite et Alberto et Ranulfo, consentiente Roberto comite (le duc Robert) , et Roberto archiepiscopo, donavi S. Mariœ lertiam partem terrœ de Burnavilla (Bonneville-sur-le-Bec) et hoc quod pertinet ad itiam , et de Tavilleio (lisez comme dans la charte de Henri ll: Cavilleio, le Petit- Quevilli), et Surceio (Sureci, hameau de Meziéres) et hoc quod pertinet ad eas; et terram de Sernaio (Cernai prés Orbec) et hoc quod pertinet ad eam;. quœ Ansgotus, pater meus. in vita sua habuit ; dotem quoque matris meœ, jubente patre meæ integro mihi datam. Coram testibus Fulberto Sacerdote, Vitale, Rainaldo et aliis multis’ (c. 1035). Thus, Bonneville (1 mile from the Castle of Brionne) belonged to him in whole as maternal dowry, and the other lands were held in equal shares with his brothers as patrimony, excepting Cernay, which was also maternal dowry; as confirmed in a charter of Henry II.; also see Receuil des Actes, no. 98. These properties were clearly held in fief of Gilbert de Brionne, cousin of the Dukes Richard II. and Robert the Magnificent. Gilbert de Brionne was the true founder of Bec; Herluin its abbot; see Robert de Torigni, G.N.D. I., 130.

Thus, Gilbert Crispin 1. is not recorded as a son or stepson of Heloise, as in tales of old.

1.1.2. Robert, Archbishop of Rouen, d. 1037.
1.1.2.1. Richard d’Evreux, m. (after 1040), as her second husband, Godechildis, widow of Roger de Tosny. (W. Genet, Liber vii., iv., p. 269).
1.1.2.1.1. Agnes d’Evreux. Orderic records that ‘Radulfus filius Rogerii de Toenia’ kidnapped ‘Agnetem uterinam sororem suam, Ricardi Ebroicensium comitis filiam’ and married her to ‘Simoni de Monteforti’, brother-in-law of William Crispin I., son of Gilbert Crispin I.
1.1.3. Guillaume d’Eu, m. Lesseline, sister of Turquetil de Harcourt.
1.1.3.1. Gilbert Crispin I. (By a concubine). This ancestry is possible, or equally that of him being an illigitimate son of Gilbert de Brionne, under whom he served as commander of the fortress of Tillieres.

1.1.1.1.1. As per Mr. Stapleton’s speculation: Baldwin Fitz-Gilbert, m. (2) Emma, supposedly a dau. of William the Conqueror ‘s aunt, per O.V.; a statement of many possibilities. A confirmation charter of Henry II to the abbey of Bec confirms the grant of Emma, wife of Baldwin Fitz-Gilbert, and of her sons Robert and Richard (“Ex dono Emma uxoris Baldwini filii comitis Gilberti et filiorum ejus Roberti et Ricardi), reciting the gift of the manor of Mesnilsimon, with its church and all churches and manors pertaining to it, by Fulk d’Anet (very likely the father-in-law of Gilbert Crispin I.*), and of the land of Groselers near Landan, etc., by Albreda sister of the same Fulk; and a gift of the manor of Conteville, its church, and all manors, etc., pertaining to it, by William Malet, husband of Hesilia Crispin, dau. of Gilbert Crispin 1. Robert Malet, held the fief of Collavilla, near Harfleur, Seine-Inf. Domesday shows “Gilbert de Colavilla” as a considerable undertenant of Robert Malet at Rendlesham; he also held under Robert Malet’s mother, Hesilia Crispin (DB/Sf 6/19-21, 29-30, 34-37, etc.). Gilbert Crispin II., alias Colavilla, held the border fortress of Damville as vassal of Richard de Clare, son of Gilbert de Brionne, and brother of Baldwin de Clare. *Which would answer M. Le Prevost’s statement that there was an apparent association between the Crispin and FitzOsborn family, without the basis of that association being known. (‘Ordericus Vitalis’, ed. le Prevost et. al., p. 398, 1840). Gunnora d’Anet was the da. of Fulk d’Anet, from the vil of Anet, south of Ivry, son of a sister of Osborn de Crépon (father of William FitzOsborn), who married Emma, da. of Raoul d’Ivri (Count Rodolph), uterine brother of Duke Richard I.
1.1.1.1.1.1. Adeliza, died childless.
1.1.1.1.1.4. Richard died without issue in 1137, and left all his property to Adel1za, his sister, who d. 3 months after him; leaving her inheritance to her nephew, Ralph Avenel.
1.1.1.1.1.5. Robert, present at Antioch in 1106.
1.1.1.1.1.6. William. king Henry confirms the rights of the Abbey of Bec to lands in England, “De dono Willielmi Fil. Baldwini,” who appears to have been the founder of the priory of St. Andrews, Cowick (vide Monast. Exoniensis).
1.1.1.1.1.7. Emma, m. (1) William Avenel, seneschal to Robert, Count of Mortain; accompanied him to England in 1066.
1.1.1.1.1.7.1. Ralph Avenel.
1.1.1.1.1.7.1.1. William Avenel. His confirmation of the grant of his father Ralph of the manor of Kame to Plympton priory mentions an Adeliza as being the aunt of his father, “Ranulphus Avenell pater meus et Adeliza ejus amita”.
1.1.1.1.1.7. Emma, m. (2) William, son of Wimund. (See Cart. Mont. St Michel).
1.1.1.1.1.7.1. Robert d’ Avranches, m. a dau. of Geldwin de Dol.
1.1.1.1.1.7.1.1. Matilda; a charter of her husband reads: “Robert fil. Hen. Regis per concessionem Matildis filiae Roberti de Avranches et heredis Richardi fil. Baldwini”.

1. Herfast, br. of Gunnora, wife of duke Robert.
1.1. Osborn de Crépon.
1.1.1. William FitzOsborn, m. 1. Adelise de Tosny., dau. of Roger de Tosny, son of Ralf I of Tosny, commander of Tillieres, who may have m. a sister of “Ansgotus Normannus”, above noted.
1.1.1.1. Roger de Breteuil.
1.1.1.1.1. Reynold, m. Emmeline, dau. of Hamelin de Ballon.
1.1.1.1.1.1. William de Breteuil.
1.1.1.2. William de Breteuil.
1.1.1.3. Adeliza, m. Richard de Redvers?
1.2. … de Crépon.
1.2.1. Fulk d’Anet.
1.2.1.1. Gunnora d’Anet, m. Gilbert Crispin I.
1.2.1.1.1. Hesilia Crispin, m. William Malet (Monasticon 3. 405).

Much plaster of conjecture, then, but you never know.

copyright m stanhope 2018