Nielsen Hayden genealogy
Descendants of Friedrich II, Holy Roman Emperor
1194 - 1250 (55 years)Father: Heinrich VI, Holy Roman Emperor (Nov 1165 - 28 Sep 1197 Messina, Sicily)
Mother: Constance of Sicily ( - 27 Nov 1198)
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)
:       └─ 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)
:        (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)
:           │ (m. 24 Jun 1282 Barcelona, Catalonia, Spain)
:           └─ 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)
:   └─ 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)
:       └─ Isabella d'Aquino
:        Guglielmo II Etendard ( - Aft 1281)
:            + Roberto d'Alneto
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)
       ├─ Friedrich I of Meissen (1257 - 16 Nov 1323 Wartburg, Eisenach, Thuringia, Germany)
       │ Elisabeth von Lobdeburg-Arnshaugk (1286 - 22 Aug 1359 Gotha, Thuringia, Germany)(m. 24 Aug 1300)
       │    │ + Heinrich II von Hessen (Bef 1302 - 3 Jun 1376)(m. Bef 25 Sep 1320)
       │    └─ Friedrich II of Meissen (1310 Gotha, Thuringia, Germany -
       │     18 Nov 1349 Wartburg, Eisenach, Thuringia, Germany) =>
       │     18 Nov 1349 Wartburg, Eisenach, Thuringia, Germany) =>
       │     + Mechtild of Bavaria (Aft 21 Jun 1313 - 3 Jul 1346 Meissen, Saxony, Germany)
       │     (m. May 1323 Nürnberg, Bavaria, Germany)
       │     (m. May 1323 Nürnberg, Bavaria, Germany)
       └─ Agnes von Meissen (Bef 1264 - Aft 1 Feb 1332)
        Heinrich I of Brunswick (Aug 1267 - 7 Sep 1322)(m. 1282)
            + Adelheid of Everstein ( - Aft 1376)(m. Abt 1335)