ENGUERRAND [I] de Boves, son of DREUX [Drogo] de Boves & his wife --- (-[1117]). Guy Bishop of Amiens names "Drogonis Bovensis…uxor illius ac filii Ingelrannus…et Robertus, Ansellusque", in the presence of "Eustachius vicedominus, Guermundus frater eius", in an undated charter relating to "advocatione et vicecomitatu Costency"[77]. Seigneur de Boves et de la Fère-sur-Oise. Comte d'Amiens 1085: "Enguerrand comte d´Amiens et avoué de Boves" is named in a charter of the abbey of Saint-Acheul dated 1085[78]. Sire de Coucy [1085]. "…Ingelrannus de Codiciaco…et Thomas filius eius…" witnessed the charter dated 1086 which confirmed property of the church of Reims[79]. The date when Enguerrand [I] acquired Coucy is difficult to establish precisely. The Vita Sancti Arnulfi Suessionensis Episcopi records that "vir nobilis, militiæ actibus implicitus…Guido" married "uxorem…Ermengardem" and records that "Albricus frater eius, Cotidiaci dominus" was captured and expelled "per consilium suæ coniugis Avelinæ"[80]. The source does not specify who expelled Aubry from Coucy, but it is likely that it was Enguerrand. Aubry is named for the last time in 1079 in French sources in connection with Coucy, so it is likely that his expulsion occurred after that date. Presumably Enguerrand was acting to claim Coucy in the name of his wife, heiress of Coucy as suggested below. Vicomte de Coucy 1095[81]. Suger's Vita Ludovici records that "Thomam de Marna" was besieged by "pater eius Engerrannus de Bova" at "castrum…Mons Acutus…in pago Laudunensi"[82]. A charter dated 1117 records a dispute between the monks of Saint-Arnoul de Crespy and [his son] "miles Ingelrannus" who claimed "quoddam burgum in suburbio castri situm" [château de Crespy] possessed "tam a avo suo quam a suo patre Drogone", and granted to his mother as dower, while the monks claimed that "Walterus…comes Ambianensis simul et Crespeiensis cum uxore sua Adela" [Gauthier [II] "le Blanc" Comte d´Amiens, see part A above] had donated the land, as confirmed by Robert II King of France and others, and that "Hugo avus eius" who had invaded the place with violence had later relinquished it, retaining "mansuram suam" in return for an annual payment[83].
m (repudiated) as her second husband, ADA de Marle, divorced wife of AUBRY [de Beaumont-sur-Oise] Vicomte de Coucy, daughter of LETARD de Roucy Seigneur de Marle & his wife ---. Elinand Bishop of Laon donations made by "Albricus de Cociaco castro…cum uxore sua Adela et matre eius Malthilde" by charter dated 3 Nov 1059[84]. Her parentage and second marriage are indicated by the Genealogiæ Scriptoris Fusniacensis which names "Letaldus de Marla…filiam nomine Adam" as mother of "Thomam de Marla"[85], read together with the sources which indicate that Thomas was the son of Enguerrand [I] de Bove Comte d´Amiens. The Chronicle of Alberic de Trois-Fontaines names "filia…Letardi domni de Marla…Ada" as mother of "Thomam de Cocy"[86]. It is assumed that "Adela" in the first source is the same person as "Ada" in the second and third sources, but this is not beyond all doubt. [Heiress of Coucy]: as Coucy passed from her first husband to her second husband, it is supposed that Ada was heiress of Coucy, although no primary source has yet been identified which confirms that this speculation is correct.
Mistress (1): SIBYLLE de Porcien, wife of GODEFROI de Namur, daughter of ROGER Comte de Porcien & his wife Ermengarde ---. The Chronicle of Alberic de Trois-Fontaines names "Sibiliam filiam comitis Rogerii Porcensis" as wife of "comes Godefridus de Namuco"[87]. The Chronicon Huberti names "filiam suo [=Rogerus Porcensium comes] Sibillam" as wife of "Godefrido filio Alberti comitis Namucensis"[88]. Guibert de Nogent records that "Ingelrannus" abducted "filia…Rogeri comitis Porcensis", wife of "Namurensi…comiti Godefrido" and in a later passage that the couple had a daughter[89].
Enguerrand [I] & his first wife had two children