Mon arbre généalogique

No convincing evidence has been found about the family origin of Guillaume [I] de Ferrières. According to the editor of the cartulary of Sainte-Trinité de Tiron, he was the same person as Guillaume son of Guillaume de la Ferté-Arnaud[740]. This is presumably based on the superficial similarity of the two family names in Latin, but the suggestion appears impossible from a chronological point of view, assuming that the dating of the relevant charters is accurate, given the date of death of Guillaume de Ferrières shown below.

GUILLAUME [I] de Ferrières (-3 or 16 May before [1130]). Vidame de Chartres, de iure uxoris. A charter dated to before 1103 records that "Guerricus hujus Carnotensis civitatis vicedominus" donated "ecclesiam sancte Marie de Treione" to Saint-Père, with the consent of "fratris sui Alberti", that later "Willelmus de Ferrariis gener eius...ex parte uxoris sue...Isabellis" further confirmed the donation[741]. "Helessendis vicedomina" donated "in villa...Hermentarvilla" to Saint-Jean-en-Vallée, for the soul of "filii sui Hugonis vicedomini", by charter dated to [1108] which also records a similar donation by "Guillelmus de Ferreriis cum uxore sua Elisabeht vicedomine filia"[742]. The necrology of Saint-Jean-en-Vallée records the death "V Non Mai" of "Guillelmus Ferreriis" and the donation made by "Hisabellis uxor sua"[743]. The necrology of Saint-Père-en-Vallée records the death "XVII Kal Jun" of "Gillelmus de Ferrariis"[744]. m ELISABETH, daughter of GUERRY Vidame de Chartres & his wife Hélisende --- (-17/18 Apr [1149/55]). A charter dated to before 1103 records that "Guerricus hujus Carnotensis civitatis vicedominus" donated "ecclesiam sancte Marie de Treione" to Saint-Père, with the consent of "fratris sui Alberti", that later "Willelmus de Ferrariis gener eius...ex parte uxoris sue...Isabellis" further confirmed the donation[745]. "Helisendis vicedomina" confirmed a donation to Chartres Saint-Père, with the consent of "filiis suis Hugone vicedomino et Stephano et sorore eorum Elisabeth", for the anniversary of "Guerrici vicedomini et prenominate uxoris eius Helisendis", by charter dated 23 Feb 1103 (O.S.?)[746]. "Helessendis vicedomina" donated "in villa...Hermentarvilla" to Saint-Jean-en-Vallée, for the soul of "filii sui Hugonis vicedomini", by charter dated to [1108] which also records a similar donation by "Guillelmus de Ferreriis cum uxore sua Elisabeht vicedomine filia"[747]. "Elisabeth de Ferrariis vicedomina Carnotensis" donated "medietatem decime de Andevilla" to the monastery of Notre-Dame de Josaphat by charter dated to [1130], witnessed by "Robertus de Chaurcis et Radulfus frater eius...Moreherius de Leugis et Hylarius frater eius, Haimericus de Leugis..."[748]. "Helisabeth vicedomina de cujus fevo eadem terra erat et Guillelmo de Ferrariis filio eiusdem vicedomine..." confirmed the donation of "decimam terre sue...apud Treionem" to Saint-Père made by "Robertus miles de Sancto Leodegario", by charter dated to [1132][749]. A charter dated to [1132] records that "Elysabeth vicedomina Carnoti" claimed property "Treionis" from Chartres Saint-Père, but that later "Henricum filium suum" relinquished the claim[750]. "Helisabeth Carnotine civitatis vicedomina" granted duty exemptions to the monastery of Notre-Dame de Josaphat by charter dated 28 May 1140[751]. "Elizabet vicedomina Carnoti", on her deathbed, confirmed the donation to Chartres Notre-Dame made by "mater sua domina Helissendis", with the consent of "domina Loreta soror eius, Willelmus...filius eiusdem vicedomine", by charter dated to [1149/55][752]. The necrology of Chartres cathedral records the death "XV Kal Mai" of "Helisabeth vicedomina" and her donation of property "apud Mundamvillam tenebat de feodo eius Stephanus Raginaldi filius", with the consent after the death of his mother of "Guillelmus"[753]. The necrology of Saint-Père-en-Vallée records the death "XIV Kal Mai" of "Elisabet vicedomina"[754]. Guillaume & his wife had two children:

WILLIAM I "de Ferrières," Vidame.
CT I, p.234: "Arnaud, Lord of La Ferté, gives notice that his servant, Gilbert of Curia Episcopi, gave to Tiron all of the fief of Amicii; and Walter de Lamborria gave n.1: The genealogy of the lords of La Ferté– Arnaud (later La Ferté– Vidame) is quite difficult to establish. The most certain information we have is contained in a charter of Archbishop Hugo of Tours, given to the abbey of St. Peter in about 1140 [CSP 610– 11; cf. the "original" in H.291] He says that his brother, William of La Ferté, before departing to the Holy Land, gave to the abbey the woods in his forest of La Ferté. This gift was confirmed by Arnaud, son of William. Then, the latter dying shortly after the departure of his father, the archbishop himself confirmed this donation before all those who came to the funeral of Arnaud. It was then reconfirmed by Hugo, brother of Arnaud, who succeeded him as lord of La Ferté.
n.2. William and Hugo appear to us to be the two brothers of Arnaud: Hugo became Lord of La Ferté on the death of his brother, while William, better known under the name William de Ferrières, became vidame of Chartres c.1115 by his marriage with Elisabeth, daughter of Guerric, then, having succeeded Hugo as Lord of La Ferté, he united it with the vidamé of Chartres, to which it remained annexed until the Revolution."
Cf. CND I, p.clxvi for vidames in general.
c.1109: CSP 418: Bartholomeo Butello [sic] et frater [eius] Fulcherio, et ab uxore ejus
Helisendi et filio Girardo, et a domna Philippa de Curva Villa et filio ejus Ivone, et Gradulfo de Ysis et filio ejus Roberto, qui, ordine quo sunt scripti, terre domini erant, concessum et confirmatum. Testium qui huic dominorum concessioni astiterunt sunt hec...
In three acts for SP William de Ferrariis is called the son (filius) of the Vidamess Elisabeth (CSP 616, 616a, 616b, all thought by Guèrard to be "Circa a. 1132"). Guèrard apparently thought that it was this Guillelmus de Ferrariis, vicedominus Carnotensis who we see "Circa a. 1180" in an act concerning Treon (CSP 656). – de Ferreia, 530; – de Ferteia, 530;

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