Nielsen Hayden genealogy
Descendants of Guillaume de Dampierre
1196 - 1231 (35 years)Father: Guy II de Dampierre (Abt 1160 - 18 Jan 1216 bur.Abbey of St. Laumer, Blois, Loir-et-Cher, France)
Mother: Mahaut I de Bourbon (Abt 1166 - 18 Jun 1228)
Guillaume de Dampierre (1196 - 3 Sep 1231)
Margaret II of Flanders (Abt 1202 - 10 Feb 1280 bur.Abbey of Flines, Flines-lez-Raches, Hauts-de-France, France)
(m. Between 18 Aug 1223 and 15 Nov 1223)
(m. Between 18 Aug 1223 and 15 Nov 1223)
   └─ Guy de Dampierre (Abt 1226 - 7 Mar 1304)
    Mathilde de Béthune ( - 8 Nov 1264)(m. Jun 1246)
    :   ├─ Robert III of Flanders (Abt 1248 - 17 Sep 1322)
    :   │ Yolanda of Burgundy ( - 2 Jun 1280)(m. Mar 1272)
    :   │    │ + Jeanne ( - Aft 12 Mar 1328)(m. Dec 1290)
    :   │     + Wautier II d'Enghien (Abt 1267 Enghien, Hainault - Between 1309 and 1310)
    :   ├─ Guillaume IV de Dampierre (Abt 1249 - 1311)
    :   │ Alix de Clermont (m. 1286)
    :   │     + Marie d'Enghien ( - 1318)
    :   └─ Margarethe of Flanders (Abt 1254 - 3 Jul 1285)
    :    Jan I of Brabant (Abt 1252 Brussels, Flanders - 3 May 1294)(m. Abt 5 Sep 1270)
    :       │ + Margaret of England (15 Mar 1275 Windsor, Berkshire, England - Aft 11 Mar 1333 Brabant)
    :       │ (m. 9 Jul 1290 Westminster Abbey, Westminster, Middlesex, England)
    :       │ (m. 9 Jul 1290 Westminster Abbey, Westminster, Middlesex, England)
    :       └─ Margareta of Brabant (4 Oct 1276 - 14 Dec 1311 Genoa, Liguria, Italy) =>
    :        + Henry VII, Holy Roman Emperor (12 Jul 1274 Valenciennes, Nord-Pas-de-Calais, France -
    :        24 Aug 1313 Buonconvento near Siena, Tuscany, Italy)(m. 9 Jun 1292 Tervuren, Brabant)
    :        24 Aug 1313 Buonconvento near Siena, Tuscany, Italy)(m. 9 Jun 1292 Tervuren, Brabant)
    Isabelle of Luxembourg (Abt 1247 - Sep 1298)(m. Mar 1265)
       ├─ Marguerite van Vlaanderen ( - Abt 1328)
       │ Reinald I of Guelders (Abt 1255 - 9 Oct 1326)(m. 3 Jul 1286 Namur, Wallonia, Belgium)
       │    │ + Dietrich IX (1291 - 7 Jul 1346)(m. Abt 7 May 1305)
       │    └─ Reinald II of Guelders (Abt 1295 - 12 Oct 1343 Arnheim, Gelderland, Netherlands) =>
       │     + Sophia Berthout ( - 6 May 1329)(m. 11 Jan 1311)
       ├─ Isabelle de Dampierre ( - 1323)
       │ Jean de Fiennes ( - Aft 1324)(m. 1307)
       │     + Jean de Châtillon ( - Bef 1344)(m. Dec 1329)
       └─ Jean I de Dampierre (Abt Oct 1267 - Jan 1330)
        Marie d'Artois (Abt 1291 - 22 Jan 1365)(m. 6 May 1309 Paris, France)
            + Thibaut de Bar ( - 1354)