GUY [III] de Chevreuse, son of GUY [II] Seigneur de Chevreuse & his wife Aveline de Corbeil (-[22 Mar] [Jan 1263/3 Jul 1264]). "Guido dominus Cabrosie" donated property "in villa Sarnaii" to Notre-Dame des Vaux de Cernay, with the consent of "Aveline uxoris mee et Guidonis primogenitus mei", by charter dated 1206[3623]. Seigneur de Chevreuse. "Guido dominus Caprosie" donated property to Port-Royal, with the consent of "Helisendi uxore mea", by charter dated May 1220[3624]. "Guido dominus Caprosie" donated property to Port-Royal, with the consent of "Helissendis uxore mea, et fratrum meorum Milonis et Hervei", by charter dated Mar [1221/22][3625]. Guy Seigneur de Chevreuse received money from the abbey of Saint-Denis for the avouerie of Beaurain, with the consent of "Aveline sa mère, d’Hélisende sa femme, d’Hervé son frère, d’Aveline et de Cécile ses sœurs", by charter dated May 1226[3626]. "Guido dominus Caprosie" donated property "contiguum propisio domus de Roscha, versus Bele Penne" to Notre-Dame de la Roche, with the consent of "Helissendis uxoris mee", by charter dated May 1231[3627]. "Guido dominus Caprosie" confirmed a donation to Notre-Dame des Vaux de Cernay by "pie memorie Guido pater meus" by charter dated Jun 1231[3628]. "Herveus de Caprosia miles" donated "terram de Bella Penna" to Notre-Dame de la Roche, with the consent of "Guidonis fratris mei dominis Caprosie et Helisendis uxoris sue", by charter dated 1235[3629]. "Guido miles dominus Caprosie" confirmed the donation of "terram de Bella Penna" to Notre-Dame de la Roche by "Herveus frater meus", with the consent of "Helisendis uxoris mee", by charter dated 1235[3630]. "Guido dominus Caprosie" donated property to Port-Royal, with the consent of "Helissendis uxoris mee", by charter dated Jul 1239[3631]. "Guido dominus Caprosie" donated property to Port-Royal, with the consent of "Helissendis uxoris mee", by charter dated Feb [1245/46][3632]. The testament of "Herveus de Caprosia miles" is dated May 1262, bequeathes property for "…uxore mea et…Sebilla condam domina de Alneto", and appoints "…Guidonem dominum de Caprosia fratrem meum" as one of his executors[3633]. Assuming that the charter dated Jan 1259 (O.S.), quoted above, is correctly dated, there must have been two brothers both named Guy. "G. dominus de Caprosia miles" donated property from the succession of "defunctus dominus Herveus de Caprosia miles" to Port-Royal, with the consent of "Anselmi primogeniti dicti defuncti domini Hervei et matris ipsius Anselmi relicte dicti defuncti", by charter dated Oct 1262[3634]. "Guido dominus Caprosie" donated revenue “in censu nostro de Caprosia” to Vaux de Cernay for distribution to the poor by charter dated Jan 1262 (O.S.), witnessed by “Herveus miles filius noster”[3635]. [The necrology of Deuil priory records the death "XI Kal Apr" of "Egidius de Caprosia" and his donation of “decem libras”[3636]. It is possible that this entry refers to Guy [III].]
m HELISENDE, daughter of --- (-after Feb 1245). "Guido dominus Caprosie" donated property to Port-Royal, with the consent of "Helisendi uxore mea", by charter dated May 1220[3637]. "Guido dominus Caprosie" donated property to Port-Royal, with the consent of "Helissendis uxore mea, et fratrum meorum Milonis et Hervei", by charter dated Mar [1221/22][3638]. Guy Seigneur de Chevreuse received money from the abbey of Saint-Denis for the avouerie of Beaurain, with the consent of "Aveline sa mère, d’Hélisende sa femme, d’Hervé son frère, d’Aveline et de Cécile ses sœurs", by charter dated May 1226[3639]. "Guido dominus Caprosie" donated property "contiguum propisio domus de Roscha, versus Bele Penne" to Notre-Dame de la Roche, with the consent of "Helissendis uxoris mee", by charter dated May 1231[3640]. "Herveus de Caprosia miles" donated "terram de Bella Penna" to Notre-Dame de la Roche, with the consent of "Guidonis fratris mei dominis Caprosie et Helisendis uxoris sue", by charter dated 1235[3641]. "Guido miles dominus Caprosie" confirmed the donation of "terram de Bella Penna" to Notre-Dame de la Roche by "Herveus frater meus", with the consent of "Helisendis uxoris mee", by charter dated 1235[3642]. "Guido dominus Caprosie" donated property to Port-Royal, with the consent of "Helissendis uxoris mee", by charter dated Jul 1239[3643]. "Guido dominus Caprosie" donated property to Port-Royal, with the consent of "Helissendis uxoris mee", by charter dated Feb [1245/46][3644].