Nielsen Hayden genealogy
Descendants of Guillem VIII de Montpellier
- Aft 1202Father: Guillem VII de Montpellier (Abt 1131 - Bef May 1173)
Mother: Matilda of Burgundy (Abt 1130 - Bef 29 Sep 1172)
Guillem VIII de Montpellier ( - Aft 4 Nov 1202)
Eudokia (Between 1160 and 1164 - 4 Nov 1202)(m. Abt 1179)
   └─ Marie of Montpellier ( - 21 Apr 1213 Rome, Italy)
    Pedro II, King of Aragón (Between 1174 and 1176 - 14 Sep 1213 Muret, Occitan, France)(m. 15 Jun 1204)
       └─ James I, King of Aragón (2 Feb 1208 Montpellier, Hérault, France -
        27 Jul 1276 Alzira, Valencia, Spain)
        27 Jul 1276 Alzira, Valencia, Spain)
        Violant of Hungary ( - 12 Oct 1251 bur.Cistercian Monastery of Vallbona, Catalonia, Spain)
        (m. 8 Sep 1236 Barcelona, Catalonia, Spain)
        (m. 8 Sep 1236 Barcelona, Catalonia, Spain)
           ├─ Yolande of Aragón (Bef Jan 1238 - 1301 Roncevalles, Navarre, Spain) =>
           │ + Alfonso X, King of Castile and León (21 Nov 1221 Toledo, Toledo, Castilla-La Mancha, Spain -
           │ 4 Apr 1284 Seville, Andalusia, Spain)(m. 26 Nov 1248 Valladolid, Castile, Spain)
           │ 4 Apr 1284 Seville, Andalusia, Spain)(m. 26 Nov 1248 Valladolid, Castile, Spain)
           ├─ Pedro III, King Of Aragón; King Of Sicily (Jul 1240 - 11 Nov 1285) =>
           │ + Constance of Sicily (1249 - 1301 Barcelona, Catalonia, Spain)
           │ (m. 13 Jun 1262 Montpellier, Hérault, France)
           │ (m. 13 Jun 1262 Montpellier, Hérault, France)
           └─ Isabella of Aragon, Queen Consort of France (Between 1243 and 1247 -
            28 Jan 1271 Cosenza, Calabria, Italy) =>
            28 Jan 1271 Cosenza, Calabria, Italy) =>
            + Philippe III, King of France (1 May 1245 Poissy, Yvelines, Île-de-France, France - 5 Oct 1285
            Perpignan, Pyrénées-Or, France)(m. 28 May 1262 Clermont-Ferrand, Auvergne-Rhône-Alpes, France)
           
            Perpignan, Pyrénées-Or, France)(m. 28 May 1262 Clermont-Ferrand, Auvergne-Rhône-Alpes, France)