Nielsen Hayden genealogy
Descendants of Frederick Barbarossa, Holy Roman Emperor
1122 - 1190 (68 years)Father: Frederick II von Hohenstaufen (1090 - 4 Apr 1147)
Mother: Judith of Bavaria (19 May 1100 - Aft 22 Feb 1130 bur.Waldburg, Heiligen Forst, Alsace)
Frederick Barbarossa, Holy Roman Emperor (1122 - 10 Jun 1190 Saleph River, Cilicia, Anatolia)
Beatrice of Burgundy (Abt 1144 - 15 Nov 1184 Jouhe, Jura, France)(m. 9 Jun 1156 Würzburg, Germany)
   ├─ Heinrich VI, Holy Roman Emperor (Nov 1165 - 28 Sep 1197 Messina, Sicily)
   │ Constance of Sicily ( - 27 Nov 1198)(m. 27 Jan 1186 Milan, Lombardy, Italy)
   │    └─ Friedrich II, Holy Roman Emperor (26 Dec 1194 - 13 Dec 1250)
   │     Bianca Lancia (Abt 1212 - ??)
   │     :   └─ Manfredo, King of Sicily (1232 - 26 Feb 1266) =>
   │     :    + Beatrice of Savoy (4 Mar 1223 - Bef 10 May 1259)(m. Abt 1248)
   │     (Unknown mistress of Friedrich II)
   │     :   └─ Margherita de Svevia ( - Between 1297 and 1298) =>
   │     :    + Tommaso d'Aquino (Abt 1220 - 14 Mar 1273 bur.St. Maria delle Monache, Capua, Campania, Italy)
   │     :    (m. 1247)
   │     :    (m. 1247)
   │     Isabella of England (1214 - 1 Dec 1241)(m. 20 Jul 1235 Worms, Germany)
   │        └─ Margarethe von Hohenstaufen (Abt Feb 1237 - 8 Aug 1270 Frankfurt-am-Main, Germany) =>
   │         + Albrecht II of Meissen (1240 - 20 Nov 1315)(m. 1254)
   ├─ Otto II von Hohenstaufen (1167 - 2 Jan 1200)
   │ Marguerite de Blois ( - 7 May 1231)(m. Abt 1191)
   │    └─ Beatrix von Hohenstaufen (1192 - Abt 6 May 1231)
   │     Otto I von Meran (Abt 1180 - 7 May 1234)(m. 21 Jun 1208)
   │        │ + Friedrich I-III of Nurenberg (Abt 1220 - 14 Aug 1297)(m. Bef 10 May 1251)
   │        │ + Hermann II von Orlamünde (Abt 1184 - 27 Dec 1247)
   │         + Hugues de Châlons (1220 - Aft 12 Nov 1266)(m. 1 Nov 1236)
   └─ Philip II, King of Germany (1177 - 21 Jun 1208 Bamberg, Bayern, Germany)
    Irene Angelina (Abt 1181 Constantinople - 27 Aug 1208 Hohenstaufen Castle, Bavaria)(m. 25 May 1197)
       ├─ Maria von Hohenstaufen (Abt 1201 - 1235)
       │ Henri II of Brabant (1207 - 1 Feb 1248)(m. 22 Aug 1215)
       │    ├─ Mahaut of Brabant (Abt 1224 - 29 Sep 1288 bur.Cercamp Abbey, Artois, France) =>
       │    │ + Robert of France (17 Sep 1216 - 9 Feb 1250 Mansourah, Egypt)(m. 14 Jun 1237)
       │    │ + Guy II de Châtillon (Abt 1230 - 12 Mar 1289)(m. Abt 31 May 1254)
       │    └─ Henri III of Brabant (Abt 1230 - 28 Feb 1261 Leuven, Vlaams-Brabant, Belgium) =>
       │     + Alix of Burgundy (Abt 1233 -
       │     23 Oct 1273 bur.Church of the Dominicans, Leuven, Vlaams-Brabant, Belgium)(m. 1251)
       │     23 Oct 1273 bur.Church of the Dominicans, Leuven, Vlaams-Brabant, Belgium)(m. 1251)
       ├─ Kunigunde von Hohenstaufen (Between Jan 1202 and Mar 1202 - 13 Sep 1248 bur.St. Veit, Prague, Bohemia)
       │ Wenceslas I, King of Bohemia (1205 - 22 Sep 1253)(m. 1224)
       │    │ + Otto III of Brandenburg (Abt 1215 - 9 Oct 1267)(m. Jan 1243)
       │    └─ Przemysl Ottokar II, King of Bohemia (Abt 1230 - 26 Aug 1278) =>
       │     + Kunhata of Slavonia and Machva (Abt 1245 - 9 Sep 1285)(m. 25 Oct 1261 Bratislava, Slovakia)
       └─ Elizabeth von Hohenstaufen (Between Mar 1205 and May 1205 - 30 Nov 1235)
        St. Fernando III, King Of Castile, León, Galicia, Toledo, Córdoba, Jaén, and Seville (Between Jun 1201
        and Jul 1201 En route between Salamanca and Zamora -
        30 May 1252 Seville, Andalusia, Spain)(m. 30 Nov 1219 Burgos, Castile, Spain)
        and Jul 1201 En route between Salamanca and Zamora -
        30 May 1252 Seville, Andalusia, Spain)(m. 30 Nov 1219 Burgos, Castile, Spain)
           └─ Alfonso X, King of Castile and León (21 Nov 1221 Toledo, Toledo, Castilla-La Mancha, Spain -
            4 Apr 1284 Seville, Andalusia, Spain) =>
            4 Apr 1284 Seville, Andalusia, Spain) =>
            + Maria Guillen de Guzmán ( - 1262)
            + Yolande of Aragón (Bef Jan 1238 - 1301 Roncevalles, Navarre, Spain)
            (m. 26 Nov 1248 Valladolid, Castile, Spain)
            (m. 26 Nov 1248 Valladolid, Castile, Spain)