GAUCHER [III] de Châtillon, son of GUY [II] Seigneur de Châtillon & his wife Alix de Dreux [Capet] (-killed in battle Oct 1219). The Chronicle of Alberic de Trois-Fontaines names "comitis Galtheri de Sancto Paulo" as son of "Guidonem [filii Galtheiro de Monteis]i"[2047]. Seigneur de Châtillon, de Toissy, de Crécy et de Pierrefonds. "Gaucherus de Castellione dominus de Mongai" confirmed a donation to Saint-Denis by “sororio meo Balduino de Donion et...sorori meæ Amiciæ” by charter dated Mar 1201[2048]. Comte de Saint-Pol. The Red Book of the Exchequer records "comes Sancti Pauli" holding two knights’ fees "in Roinges, Donmawe, Alferstone" in Essex, Hertfordshire in [1210/12][2049]. "Galchero comiti S. Pauli et filiis suis de uxore sua" donated “Toringniacum in Normannia” to Philippe II King of France by charter dated Feb 1218 (O.S.)[2050]. A charter dated 1219 records that "Galcherus quondam dictus comes Sancti Pauli" donated property to Saint-Denis, with the consent of “filiis suis Guidone et Hugone et uxore sua”, by charter dated 1219[2051].
m (1196) as her first husband, ELISABETH de Saint-Pol, daughter of HUGUES [IV] "Candavène" Comte de Saint-Pol & his wife Yolande de Hainaut (-before 1240). The Chronicle of Alberic de Trois-Fontaines names "Ysabellam uxorem comitis Galtheri de Castellione, qui per uxorem factus est comes de Sancto Paulo, et Eustaciam uxorem Iohannis de Nigella" as children of "comiti Hugoni de Sancto Paulo" & his wife[2052]. The Chronicon Hanoniense names (in order) "Elizabeth et Eustachium" as the children of "Hugonis Sancti Pauli" & his wife[2053]. "Hugo comes S. Pauli et Jole uxor mea" donated property to the church of Thérouanne with the consent of "generorum meorum Galteri de Castellione et Johannis domini de Nigella et filiarum mearum Elilzabeth et Eustathiæ" by charter dated Jan 1201[2054]. "Galcherius de Castelione montis Gaii dominus" donated property to Tremblay "pro salute anima…fratris mei Guidonis" with the consent of "Elisabeth uxoris mee" by charter dated Jan 1205[2055].Ctss de Saint-Pol 1205. The Historia Comitum Ghisnensium refers to the wife of "Waltheri de Castellione" as "filiam Hugonis comitis Sancti-Pauli"[2056]. “Elisabeth de Castellione comitissa Sancti Pauli” confirmed an agreement between “Guidonem et Hugonem filios meos” and “Matheum de Rollepot militem” concerning “terra...Baulesche” by charter dated Jul 1220[2057]. She married secondly (1231) Jean de Béthune. Her second marriage is confirmed by the charter dated [2/30] Apr 1233 under which her son “Hugo comes Sancti Pauli” did homage to Louis IX King of France for the lands of “mater mea I. comitissa Sancti Pauli et Johannes de Bethunia, qui dicebatur eius maritus”[2058], although the last phrase suggests doubt about whether the couple was actually married.
Comte Gaucher & his wife had four children