John de Preaux

http://gw.geneanet.org/pierfit?lang=en;p=jean;n=de+preaux;oc=3

As the oldest son, he inherited his father's French lands and titles, while his younger brothers worked and fought for the Angevin kings of England.

JEAN de Préaux (-after 4 Apr 1206). Thomas Stapleton, in his "Observations on the Great Rolls of the Exchequer of Normandy", records that "Osbert de Préaux" donated tithes from harvest in the parish of Bois l’Evêque to the monks of Holy Trinity of Mont-de-Rouen, for his own soul “those of his parents and of the parents of his wife Matildis”, undated, and that his wife and “their sons Simon and John” granted the tythe to the monks in perpetuity, but he does not cite the source reference[2219]. "Johs de Patell et Petrus et Engelm de Patell" were granted property of “Gundolum de Bretemar”, dated Sep 1199[2220]. "...Johe et Pet de Pratell...Engeram de Pratell..." witnessed an order dated 31 Jan 1200[2221]. “Petrus de Pratell” donated annual revenue to Notre-Dame de Beaulieu, for the salvation of “mee et patris mei et matris mee et fratrum meorum...Simonis et Rogeri, Iohannis et Engerranni” by charter dated to [Jun 1200][2222]. King John granted custody of "heredem Dun Bard" to “Waltero de Sancto Joh militi...et...J. de Patell” dated 29 Jul 1203[2223]. John King of England confirmed the grant of land “in Tywa” made to "Johi de Patell" by “Rann com Cestr” dated 4 Apr 1206[2224]. m ---. The name of Jean’s wife is not known. Jean & his wife had one child:

i) GUILLAUME de Préaux (-1223). “Petrus de Pratellis et alii milites...apud Rotomagum” confirmed the terms of peace at Rouen and gave “Guillelmum nepotem meum filium Joannis de Pratellis” as hostage, dated 1 Jun 1204[2225]. John King of England granted "terram que fuit Willi de Lanvalay...Rad de Rouecestr...insulas de Geresye" to “Willo de Pratellis”, dated 19 Mar 1216[2226]. King John granted "manerio de Awelton" to “Willo de Patell” dated 9 Apr 1216[2227]. m firstly (before Oct 1215) as her third husband, PHILIPPA d'Alençon, widow firstly of WILLIAM de Roumare Earl of Lincoln and secondly of GUILLAUME [III] Malet de Graville, daughter of JEAN [I] Comte d'Alençon & his wife Beatrix de Maine [Anjou] (-before [1220]). m secondly MARIE, daughter of --- (-after 1223). The Complete Peerage notes that Guillaume left "left a widow Mary when he died"[2228]. http://fmg.ac/Projects/MedLands/NORMAN%20NOBILITY.htm#_Toc384196820

The differences between the Geneanet and Medlands versions are hard to reconcile.