Iwain dit “ le Chauve” van Gent, seigneur d'Alost

https://nl.m.wikipedia.org/wiki/Iwein_van_Aalst

In 2028, ter nagedachtenis van de 900ste verjaardag van de ‘slag bij Hertshaag’, plant de stad Aalst een grootse ‘Iwein van Aalst-herdenking’ Bron: https://www.hln.be/aalst/900-jaar-na-de-slag-bij-de-hertshaag-wordt...

Fm fmgMedlands

IWAN (-8 Aug 1145). The Historia Comitum Ghisnensium names "Balduinum Luscum…dictum Gernobodatum, Alostensis terre…dominum, et Ivenum de Gandavo" as children of "Balduinus cognomento Grossus sive Magnus"[23]. The Chronicon Affligemense names "domus Remundis de Alost eiusque duo filiis Balduinus et Ivanus"[24]. Graaf van Aalst, Gent, Waas, Donghen en Liedekerke. Galbert of Bruges names "frater Baldevini ex Alst…Iwan"[25]. "Wenemarus castellanus Gandensis, Hachet castellanus Brugensis, Galterus castellanus Curtracensis, Baldewinus de Alost et Iwain frater eius, Razo de Gavera…" signed the charter dated 1 Feb 1117 under which "Balduinus…Flandrensium comes" confirmed donations to Voormezeele abbey[26]. "Balduinus de Alost ac frater meus Iwanus" donated "ecclesiam de Herenbaldeghem" to Affleghem abbey by charter dated 1125[27]. "…Balduinus Gandavensis, Hiuvannus frater eius…" signed the charter dated 14 Apr 1127 under which Guillaume Count of Flanders granted privileges to the town of Saint-Omer[28]. The Genealogia Comitum Flandriæ records that "Iwanus et Daniel nepos eius" captured Gent and Bruges in 1128 in support of the succession of Thierry d'Alsace as Count of Flanders but were expelled from Flanders[29]. "Iwanus de Gand…cum uxoris meæ Lauretæ filiæ Theoderici comitis" donated property to "Fratrum Trunciniensis ecclesiæ" near Gand by charter dated 22 Sep 1139[30]. The Annales Blandinienses record the death in 1144 of "Iwainus de Alst"[31]. A manuscript from Gembloux abbey records the death in 1145 of "Iwanus de Alost"[32].

m (before 22 Sep 1139) as her first husband, '''LAURETTE de Flandre''', daughter of THIERRY I Count of Flanders & his first wife Swanhilde --- (-[1175]).  The Cartulaire de Saint-Bertin records that Count Thierry "ex priori uxore unicam tantum filiam habuit quam Ivanus de Alosto postea sortitus est in conjugium" but does not give her name[33].  The Flandria Generosa names "Laurentiam" as the only daughter of "comitissa etiam Suanildis", specifying that her marriage with "dux de Lemburg" was terminated on grounds of consanguinity, that she subsequently married "Iwanus de Alst", and after the latter's death "Rodulfo comiti Peronensi" and "comiti de Namur", although this switches her first and second husbands[34].  "Iwanus de Gand…cum uxoris meæ Lauretæ filiæ Theoderici comitis" donated property to "Fratrum Trunciniensis ecclesiæ" near Gand by charter dated 22 Sep 1139[35].  Nun at Voorst after she was widowed.  She married secondly (1150, divorced 1152) Hendrik II Duke of Limburg, thirdly (1152) as his third wife, Raoul I "le Vaillant" Comte de Vermandois, and fourthly (before 1159, divorced 1163) as his first wife, Henri "l’Aveugle" Comte de Namur et de Luxembourg.  Iwan & his wife had one child: 

a) DIRK van Aalst (1144-20 Apr 1166). "Theodericus…dominus et princeps Alostensis" donated "silvam meam…Hokerda…" to Afflighem abbey by charter dated 1164[36]. The Annales Blandinienses record the death in 1166 of "Theodericus filius Iwaini de Alost"[37]. m as her first husband, LAURETTE de Hainaut, daughter of BAUDOUIN IV “le Bâtisseur” Comte de Hainaut et de Namur & his wife Alice de Namur (-9 Jun 1181). The Chronicon Hanoniense names (in order) "Yolandem, Agnetem, Lauretam" as the daughters of "Alidis comitissa Hanonensis …cum viro Balduino comite", specifying that Laurette married "Theodericus de Alost, Iwani de Gandavo et Laurete filius" and secondly "in Francia Bucardo de Monte Morenciaco…filium Matheum"[38]. She married secondly (early Jan 1173) Bouchard [IV] Seigneur de Montmorency.

https://fmg.ac/Projects/MedLands/FLEMISH%20NOBILITY.htm#_Toc59294221