Alexandre de Bourgogne Chalon sur Saon, Eveque

GUILLAUME de Montagu (-after Jan 1299).  “Guillaume de Mon” reached agreement over the succession of “Phelippe seignor de tagu seigneur de Mâlain et sa femme Jacquette” withratified the donation made to the abbey of la Bussière by “Hervé jadis seigneur de Sombernon” by charter dated Aug 1255[294].  Seigneur de Montagu.  “Guillelmum dominum Montis acuti” and the commander of Bellecroix reached agreement concerning the customs of Aluze by charter dated Mar 1258[295].  “Guillermus de Monteacuto dominus de Maalein domicellus et Alexander filius eius” donated property to Bussière, for the soul of “Iacquetæ quondam dominæ de Maalein relictæ dicti Guillermi matrisque prædicti Alexandri”, by charter dated Oct 1259[296].  "Guillielmus miles dominus Montisacuti" confirmed the donation to the church of Chalon made by "Alexander…quondam Cabilonensis episcopus avunculus meus" by charter dated Aug 1263[297].  “Guillelmus dominus Montisacuti miles” confirmed privileges granted to the town of Montagu by “Odo bone memorie quondam dominus Montisacuti miles” (by charter dated 1241 which is quoted) by charter dated 21 Jul 1291[298].  The testament of "Guillelmus dominus Montis Acuti miles, Cabilonensis dyocesis" is dated Jan 1298 O.S., chooses his burial "in ecclesia Maceriarum…Cabilonensis dyocesis", names "Alexandri de Maalain primogeniti mei de prima uxore mea, Odardum, Agnetam et Aalidem liberos meos [de secunda u]xore mea"[299].  m firstly JACQUETTE de Sombernon, daughter of HERVE [II] Seigneur de Sombernon & his second wife Blanche [Ermengarde] d’Etais (-[Aug 1256/Oct 1259], bur Bussière).  Dame de Mâlain.  “Guillermus de Monteacuto dominus de Maalein et...Iacqueta uxor dicti Guillermi” confirmed the donation of harvest “in grangia nostra de Maalein” made to La Bussière by “bonæ memoriæ Heruerii quondam domini Sombernionis”, by charter dated Aug 1255[300].  “Guillaume de Montagu sire de Mâlain et Jacquette sa femme” acknowledged the right of la Bussière abbey to harvest donated by “Hervé sire de Sombernon” by charter dated Aug 1256[301].  “Guillermus de Monteacuto dominus de Maalein domicellus et Alexander filius eius” donated property to Bussière, for the soul of “Iacquetæ quondam dominæ de Maalein relictæ dicti Guillermi matrisque prædicti Alexandri”, by charter dated Oct 1259[302].  m secondly DAMERON de Buffon, daughter of --- (-after Aug 1261, bur Fontenay).  The testament of "Dameruns dame de Buffon femme mon seignour Guillaume chevalier de Montagu" is dated Aug 1261, chooses her burial "en la...maison de Fontenay" and makes religious donations[303].  m thirdly MARIE des Barres, daughter of ---.  An arrêt of Parliament dated 1291 relates to a dispute between “Guillelmum de Monteacuto militem, Mariam eius uxorem et Ioannem de Barris armigerum fratre dictæ Mariæ” and “Ioannetum filium Odonis et Guillelmum filium Petri de Barris militis” regarding the inheritance of “Aelipdim quondam dominam de Barris”[304].  Guillaume & his first wife had one child: 

i) 'ALEXANDRE de Montagu' (-after Jan 1299). “Guillermus de Monteacuto dominus de Maalein domicellus et Alexander filius eius” donated property to Bussière, for the soul of “Iacquetæ quondam dominæ de Maalein relictæ dicti Guillermi matrisque prædicti Alexandri”, by charter dated Oct 1259[305]. Seigneur de Mâlain. Seigneur de Sombernon: “Alixandres de Montagu Sires de Sombernon” confirmed the donation made to Bussière on her deathbed by “Amiars dite Blainche cui en arriers Dame de Sombernon qui morte est”, by charter dated Mar 1272[306]. “Alexander de Monteacuto dominus Sombernionis miles” confirmed the donation made to Bonvaux on her deathbed by “bonæ memoriæ Maingerdis dicta Blanche domina quondam Sombernionis”, by charter dated Jun 1293[307]. The testament of "Guillelmus dominus Montis Acuti miles, Cabilonensis dyocesis" is dated Jan 1298 O.S., names "Alexandri de Maalain primogeniti mei de prima uxore mea, Odardum, Agnetam et Aalidem liberos meos [de secunda u]xore mea"[308]. He had one son.

- Son: SEIGNEURS de SOMBERNON.

http://fmg.ac/Projects/MedLands/burgddijon.htm#EudesIMontaigudied1243