Nielsen Hayden genealogy
Descendants of Costanza of Portugal
1290 - 1313 (23 years)Father: Diniz, King of Portugal (9 Oct 1261 Lisbon, Portugal - 7 Jan 1325)
Mother: St. Isabel of Portugal (4 Jan 1271 Zaragoza, Aragón, Spain - 4 Jul 1336)
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)
       └─ Pedro I, King of Castile (30 Aug 1334 Burgos, Castile, Spain -
        23 Mar 1369 Montiel, Ciudad Real, Castile-la-Mancha, Spain)
        23 Mar 1369 Montiel, Ciudad Real, Castile-la-Mancha, Spain)
        Maria García de Padilla (Abt 1335 - Jul 1361 Seville, Andalusia, Spain)(m. 1353)
           ├─ Constance of Castile (1354 - 24 Mar 1394)
           │ + John of Gaunt (Mar 1340 Abbey of St. Bavo, Ghent, Flanders - 3 Feb 1399 Leicester Castle, Leicester,
           │ Leicestershire, England)(m. 21 Sep 1371 Roquefort, near Bordeaux, Guienne, France)
           │ Leicestershire, England)(m. 21 Sep 1371 Roquefort, near Bordeaux, Guienne, France)
           └─ Isabella of Castile (1355 - 23 Dec 1392 bur.Church of the Dominicans, Langley, Hertfordshire,
            England) =>
            England) =>
            + Edmund of Langley (Kings Langley, Hertfordshire, England;5 Jun 1341 - 1 Aug 1402)
            (m. Between 1 Jan 1372 and 30 Apr 1372 Hertford, Hertfordshire, England)
            (m. Between 1 Jan 1372 and 30 Apr 1372 Hertford, Hertfordshire, England)