Nielsen Hayden genealogy
Descendants of Constance of Sicily
1249 - 1301 (52 years)Father: Manfredo, King of Sicily (1232 - 26 Feb 1266)
Mother: Beatrice of Savoy (4 Mar 1223 - Bef 10 May 1259)
Constance of Sicily (1249 - 1301 Barcelona, Catalonia, Spain)
Pedro III, King Of Aragón; King Of Sicily (Jul 1240 - 11 Nov 1285)(m. 13 Jun 1262 Montpellier, Hérault, France)
   ├─ St. Isabel of Portugal (4 Jan 1271 Zaragoza, Aragón, Spain - 4 Jul 1336)
   │ Diniz, King of Portugal (9 Oct 1261 Lisbon, Portugal - 7 Jan 1325)(m. 24 Jun 1282 Barcelona, Catalonia, Spain)
   │    ├─ Costanza of Portugal (3 Jan 1290 - 23 Nov 1313 Sahagún, León, Spain)
   │    │ Fernando IV, King of Castile (6 Dec 1285 Seville, Andalusia, Spain - 7 Sep 1312 Jaén, Andalusia, Spain)
   │    │ (m. Jan 1302 Valladolid, Castile, Spain)
   │    │ (m. Jan 1302 Valladolid, Castile, Spain)
   │    │    └─ Alfonso XI, King of Castile and Leon (13 Aug 1311 Salamanca, Salamanca, Spain -
   │    │     26 Mar 1350 Gibraltar, Spain) =>
   │    │     26 Mar 1350 Gibraltar, Spain) =>
   │    │     + Maria of Portugal (Abt 1313 - 13 Jan 1357 Évora, Alentejo, Portugal)(m. Sep 1328)
   │    └─ Afonso IV, King of Portugal (Lisbon, Portugal;8 Feb 1291 - 28 May 1357)
   │     Beatriz of Castile (1293 Toro, Castile, Spain - 25 Oct 1359 Lisbon, Portugal)
   │     (m. 12 Sep 1309 Lisbon Cathedral, Lisbon, Portugal)
   │     (m. 12 Sep 1309 Lisbon Cathedral, Lisbon, Portugal)
   │        └─ Maria of Portugal (Abt 1313 - 13 Jan 1357 Évora, Alentejo, Portugal) =>
   │         + Alfonso XI, King of Castile and Leon (13 Aug 1311 Salamanca, Salamanca, Spain -
   │         26 Mar 1350 Gibraltar, Spain)(m. Sep 1328)
   │         26 Mar 1350 Gibraltar, Spain)(m. Sep 1328)
   └─ Federico II of Aragón, King of Sicily (13 Dec 1272 - 25 Jun 1337 Palermo, Sicily)
    Eleanora d'Anjou (Aug 1289 - 9 Aug 1341 Catania, Sicily)(m. May 1303 Messina, Sicily)
       ├─ Pietro II of Aragón, King of Sicily (1304 - 15 Aug 1342 Calascibetta, Sicily)
       │ Elisabeth of Carinthia (Abt 1298 - 1352)(m. 23 Apr 1322)
       │     + Ruprecht II (12 May 1325 - 6 Jan 1398)(m. 1345)
       └─ Elisabeth of Aragon (Abt 1309 - 21 Mar 1349 Landshut, Bavaria, Germany)
        Stephan II of Bavaria (22 Dec 1313 - 19 May 1375 Landshut, Bavaria, Germany)(m. 27 Jun 1328)
           ├─ Stephan III of Bavaria (Abt 1337 - 26 Sep 1413 Niederschönenfeld, Bavaria, Germany) =>
           │ + Taddea Visconti (1352 Milan, Lombardy, Italy - 28 Sep 1381 Munich, Bavaria, Germany)
           │ (m. 13 Oct 1367 Milan, Lombardy, Italy)
           │ (m. 13 Oct 1367 Milan, Lombardy, Italy)
           ├─ Frederick of Bavaria (Abt 1339 - 4 Dec 1393 Budweis, Bohemia) =>
           │ + Maddalena Visconti (1361 - 17 Jul 1404 Burghausen, Bavaria)
           │ (m. 2 Sep 1381 Landshut, Bavaria, Germany)
           │ (m. 2 Sep 1381 Landshut, Bavaria, Germany)
           └─ Johann II of Bavaria (Abt 1341 - 8 Aug 1397 Munich, Bavaria, Germany) =>
            + Katherina of Görz ( - 31 May 1391 bur.Seligenthal, Thuringia, Germany)
            (m. Between Oct 1372 and Nov 1372)
            (m. Between Oct 1372 and Nov 1372)