1. Boudewijn (“von Flanderen”), count of Flanders, m. Ælfthryth, dau. of Alfred “the Great”, king of the Anglo-Saxons, and Ealhswith.
1.1. Arnulf I. (“the Great”), count of Flanders; born in 889, in Ghent, East Flanders, d. 965; m. Adele of Vermandois, dau. of Héribert II, count of Vermandois, and Adèle, dau. of Robert I, King of France, and Aélis. His southern expansion led to conflict with the Normans, who were trying to secure their northern frontier, resulting in the 942 murder of William Longsword at the hands of Arnulf’s confederates.
1.1.1. Baldwin III., Count of Flanders, m. Matilda, dau. of Hermann I, duke of Saxony and Hildegard von Westerburg
1.1.1.1. Arnulf (961-March 30, 987), Count of Flanders, m. Rozala, dau. of Berengar II., king of Italy.
1.1.1.1.1. Baldwin (Jan. 8, 980 – May 30, 1035), Count of Flanders, m. (2) Elenore, dau. of Richard II, of Normandy, half-br. Geoffrey, father of Gilbert de Brionne.
1.1.2. Luitgarde, m. Wichman von Hamaland, “burggraaf von Ghent”.
1.1.2.1. Theodric von Ghent, m. Hildegarde.
1.1.2.1.1. Heloise, m. Ansgot. ‘Au commencement du onzième siècle, Bonneville appartenait à un chevalier de race normande, nommé Ansgot, vassal de Gislebert, comte de Brionne, et allié, par sa femme Hellois, aux puissants comtes de Flandres’* (Alfred Canel, Essai historique, archéologique et statistique sur l’arrondissement de Pont-Audemer, p. 314, 1834). *Will. Gem. vi. 9. ‘Mater proximam Ducum Morinorum, quosmoderni Flandros cognominant, consanguinitatem attigit’.

Ansgot et Héloïse eurent trois autres enfants, savoir: Eudes, Roger et une fille mariée à Balderic de Servaville; ils paraissent leur avoir laissé en héritage, outre le fief de Bonneville, le Petit-Quevilly, le Pré, près de Rouen, Surcy-en-Vexin, Cernay, et un manoir à Malleville (Charpillon, Dict. Hist. vol. i., 1868). … Gilbert, comte de Brionne, donna aux religieux la pêche de Pont-Autou, les prés d’Antouel, la forêt et la terre de Malleville et le moulin de Norman. La grande charte de Guillaume le Conquérant mentionne en ces termes les donations de Gilbert de Brionne : Gislebertus comes, servitia alodiorum fratrum Herluini abbatis, aquani Rislae a vadis usque sub Ponte-Autou, quod habebat in Malavilla, molendinum Normanni. Bibl. nat. lat. 13905. fo 115.

One of the most erroneus and repeated myths of Norman genealogy makes Gilbert Crispin I. synonomous with Gilbert, Count of Brionne. Prévost, in his commentaries on Rom. de Rou, t. ii., in MSAN, 1828-1829, gives the source of this misconception, which should not be necessary if the slightest attention is given to the unlikely event of a governor of the castle of Tillières being also the Count of Brionne.

1.1.2.1.1.1. Herlwin. Annales ordinis s. Benedicti occidentalium monachorum patriarchae, in quibus …By Jean Mabillon … Notum fit omnibus christianæ religionis cultoribus , quòd ego abbas Herluinus, filius Ansgoti; astantibus & laudantibus fratribus meis, Odone Rogerio, jubente Gilleberto comite, & Alberto & Ranulfo, consentiente Roberto comite & Roberto arcbiepiscopo, donavi Sanctæ Mariæ tertiam partem terræ de Burnevilla, & hoc quod pertinet ad illam ; & Tavilleio & Surceio , & quod pertinet ad est , & terram de Sernaio,* & hoc quod pertinet ad eam, quæ Ansgotus pater meus in vita sua habuit : dorem quoque matris meæ , jubente patre meo ex integro mibi datam. Coram testibus Fulberto , Vitale , Rainaldo , et aliis multis.

1.1.2.1.2. Erchembald von Ghent, vicecomes (in this instance, sheriff) of Rouen, m. a dau. of Richard de Beaufou and a sister of Emma d’Ivri, Abbess of St. Amand (wife of Osmund the dapifer); granddau. of Sprotta and Esperlenc, thus consanguineous of the Norman ‘dukes’.
1.1.2.1.2.1. Gislebert Crispin, m. Gunnora de Conteville (born 1009), granddau. of Osmund de Conteville, and a sister of Osmund the dapifer, who Gislebert Crispin attempted to defend during the successful attempt to kill him in 1040. Gislebert made a gift to St. Amand to honour Osmund’s memory. He was a vassal of Gilbert de Brionne.

1.1.2.1.1.2.1. Hesilia (Helewise/Heloise) Crispin, m. William Malet; he receiving Conteville by dower.

Sometimes – a lot in a name.

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