MATHIEU de Montmorency, son of MATHIEU [I] Seigneur de Montmorency & his first wife Alix [of England] (-Constantinople 27 Aug 1204). "Matheus de Montemorenciaco" donated property to the abbaye du Val, with the consent of "filii mei Buchardus, Theobaldus, Matheus", by charter dated 1160[3607]. "Bucardus de Monte Morenciaco" donated money to Notre-Dame des Vaux de Cernay by charter dated to [1160/77], witnessed by "Teobaldo fratre meo, Matheo fratre meo…"[3608]. His parentage is confirmed by the donation to Port-Royal dated Dec 1227 by "Matheus dominus Montismorenciaci" which names "bone memorie Matheus de Monte Morenciaco patruus noster et…consanguinei nostri Buchardus et Malliaco filii eiusdem Mathei"[3609]. Seigneur de Marly et d'Attichy. "Matheus dominus Marleii" donated property to Notre-Dame des Vaux de Cernay by charter dated to [1177], witnessed by "Milone de Nielpha…"[3610]. "Matheus de Montemorenciaco Marlei dominus" granted exemptions to Bon Port Notre-Dame in "castro nostro Marlei et in terra nostra Mellentii", with the consent of "uxoris mee Matildis", by charter dated 1190[3611]. "Matheus de Montemorenciaco dominus Marliaci", leaving on crusade, instructs "Matildis uxor mea" for a pious foundation by charter dated before 1204[3612]. The necrology of Port-Royal records the death "VI Kal Sep" of "mons. Mathieu de Marly"[3613].
m ([1189/90]) as her second husband, MATHILDE de Garlande, widow of HUGUES de Gallardon Seigneur de Gallardon, daughter of GUILLAUME de Garlande & his wife Idoine de Chaumont (-16 Mar 1224). "Matheus de Montemorenciaco Marlei dominus" granted exemptions to Bon Port Notre-Dame in "castro nostro Marlei et in terra nostra Mellentii", with the consent of "uxoris mee Matildis", by charter dated 1190[3614]. "Matildis filia Willelmi de Garlanda et Idonee uxoris sue et uxor domini Mathei de Montemorenciaco" founded the priory of Notre-Dame de Gournay on the anniversary of her father by charter dated after Jul 1191[3615].A charter dated Mar 1193 (O.S.) records an agreement between Notre-Dame de Josaphat and "dominam Mathildim uxorem domini Mathei de Montemorenciaco" concerning "molendino de Galardone...in loco...Richebort" acquired by "Hugo de Galardone et predicta M. quondam eius uxor", and the confirmation by Mathilde and her second husband, with the consent of "filiis eorum Burchardo, Matheo, Guillelmo" of a donation made by "sepedictus H. de Galardone"[3616]. "Domina Matildis de Maliaco, Buchardus filius eius et Matheus frater eius" witnessed a donation to Port-Royal by "dominus Paganus de Ursinis" by charter dated Aug 1204[3617]. The Historia Albigensium of Pierre de Vaux-Cernay records that "mater Buchardi de Marliaco" escaped from "Minerbam" after the castle surrendered to Raymond VI Comte de Toulouse in 1210[3618]. "Bucherius Malliaci dominus…et M uxor mea et domina M mater mea" donated property to Port-Royal by charter dated 1218[3619]. "Matildis de Marleio" noted a donation to Port-Royal by "dominus et maritus noster Matheus de Montemorenciaco" by charter dated Feb 1223/24[3620].
Matthieu & his wife had four children