Jean de Beaugency, seigneur de La Flèche

Jean (John, Johannes) de La Flèche is first known from a charter of 1032×1052, when Agnès, wife of count Geoffroy Martel, purchased the church of Saint-Bienheuré de Vendôme from Jean's father Lancelin de Baugency, and acquired the church of Saint-Jean de Châteaudun from Jean and his brother Lancelin ["a Lancelino dominico vasso de castro Balgentiaco, ...; ... a filiis ejusdem Lancelini, scilicet Johanne et Lancelino, ..." Cart. Trinité de Vendôme, 1: 43 (#22)]. He was evidently lord of La Flèche by 1081, based on his appearance in a charter of 1060×1081: ["Johannes de Feza" Cart. S.-Aubin 1: 297 (#254)]. Jean de La Flèche was still living on 13 February 1087, when he made a donation to Saint-Aubin.

http://sbaldw.home.mindspring.com/hproject/prov/john0000.htm

La Flèche is a commune in the Sarthe department in the Pays de la Loire region in north-western France.

The Prytanée National Militaire is located in La Flèche. The town inhabitants refer to themselves as Fléchois.
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"Jean de Beaugency or de Beaugency , who died in 1088 , was the first lord of La Flèche , where he founded a fortress on the banks of the Loir in 1051. His son Élie de La Flèche would become Count of Maine .
Biography
Jean de Beaugency is the second son of Lancelin I , Lord of Beaugency and his wife Paule du Maine, the daughter of Herbert I ÉVEILLE -Chien , Count of Maine . In 1051, he erected a fortress in his seigneury of La Flèche , which he inherited from his marriage. Built on stilts on the banks of the Loir , on the site of the current Château des Carmes, the fortress extends over three islands connected by arches and whose fortifications are reinforced by a network of artificial canals. Jean de Beaugency thus wishes to divert part of the commercial traffic of the medieval road going from Blois to Angers by this place in order to force the merchants to pay a right of passage. The dimensions of the building are large enough for it to contain an army.
To administer his seigniory, to which thirty-three vassals then belonged, Jean de Beaugency appointed a seneschal . From 1060, this charge was entrusted hereditarily to the family of Cleers. In the struggle between Foulques IV le Réchin , Count of Anjou , and William the Conqueror , King of England and Duke of Normandy, Jean de Beaugency, although a vassal of the former, chose to support the latter. La Flèche was then threatened and the fortress was besieged in 1078 by the troops of Foulques IV. William the Conqueror sends an army to support his ally but combat is ultimately averted through the mediation of several churchmen including Bishop Odo of Bayeux . Peace was finally concluded on a piece of land near La Flèche called Blanche-Lande or Lande de la Bruère , on the territory of the current commune of Thorée-les-Pins . However, this peace is short-lived and Foulques IV besieges the fortress again in 1081 and ends up burning it.
In 1087, Jean de Beaugency donated the chapel of his castle to the Benedictine monks of the Saint-Aubin d'Angers abbey , as well as the church of Saint-Odon, located further east in the neighboring parish of Sainte-Colombe. He died in 1088 and was buried in this same abbey.
Through his marriage to Herberge d'Este, Jean de Beaugency has seven children. The two eldest, Goisbert and Enoch, become monks after having fought. The third, Élie de La Flèche , took over and became Count of Maine in 1093. The four other children, Geoffroy, Lancelin, Million and Guillaume, died prematurely."
[https://fr.wikipedia.org/wiki/Jean_de_Beaugency]
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"Il est aussi connu sous le nom de Jean de Beaugency, seigneur de la Flèche. Il est aussi connu sous le nom de Jean de Boisgency, seigneur de la Flèche.
Il est le fils de Paule du Maine et Lancelin Ier de Beaugency, seigneur de la Flèche.
Il naît en 1047. Il épouse Herberge du Maine, fille de Hugues V, comte du Maine et Héria de Hauteville de Pouille en 1085. Il décède en 1095. Il est inhumé en 1096 à Saint-Aubin, Angers, 49, Pays-de-Loire, France.
Liste de ses enfants connus:
+ 1. Hélie Ier, comte de Beaugency du Maine (1078 - 1110) (de Herberge du Maine)"
[https://genealogie.quebec/stemma4web/info/24012]