Duarte I De Aviz 
Duarte I De was born on October 31st, 1391 in Viseu, Portugal. Duarte I De's father was Joao I De Aviz and his mother was Philippa Plantagenet. His paternal grandfather was Pedro I De Bourgogne and his paternal grandmother is Theresa Lourenso; his maternal grandparents were John Of Gaunt+ Plantagenet and Blanche+ Plantagenet. He had two brothers and two sisters, named Pedro De, Joao De, Beatriz De Portugal De and Isabel De. He was the second oldest of the five children. He had a half-brother named Afonso I De. He died at the age of 46 on September 9th, 1438 in Tomar, Santarbem, Portugal. He was buried in Mosterio de Batalha, Leiria, Portugal.-
Ancestor Pedigree Chart
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*There are earlier generations for the ancestor(s) indicated. See their page(s) for details (click name)
- b.10 May 1210 in Coimbra d.16 Feb 1279 in Lisbon, Spain
- b.09 Oct 1261 d.07 Jan 1325
- b.1242 d.1313
- b.08 Feb 1291 in Coimbra d.28 May 1357 in LIsbon, Portugal
- b.~ 1239 in Barcelona, Aragon d.02 Nov 1285 in Villafranca Del Panades, Barcelona, Aragon
- b.1271 in Barcelona, Spain d.04 Aug 1336 in Estremoz
- b.1249 in Catania, Italy d.1302 in Barcelona, Aragon
- b.08 Apr 1320 in Coimbra d.18 Jan 1367
- b.1221 d.1284
- b.12 May 1258 in Seville, Spain d.25 Apr 1295 in Toledo, Spain
- b.> 1235 d.1300
- b.1293 d.1359
- b.BET 1203 AND 1204 in Leon, Spain d.06 Jan 1272 in Salamanca, Spain
- b.> 1260 in Molina, Guadalajara, Spain d.01 Jul 1321 in Valladolid, Spain
- b.> 1230 in Montealegre, Valladolid, Spain
- b.11 Apr 1357 in Lisboa, Portugal d.14 Aug 1433 in Lisboa, Portugal
- b.~ 1324
- b.31 Oct 1391 in Viseu, Portugal d.09 Sep 1438 in Tomar, Santarbem, Portugal
- b.17 Jun 1239 in Westminster, London, England d.07 Jul 1307 in Burgh by Sands nr. Carlisle, Cumberland, England
- b.25 Apr 1284 in Caernarvon Castle, Caernarvonshire, Wales d.21 Sep 1327 in Berkeley Castle, Gloucestershire, England
- b.1244 in Burgos, Burgos, Spain d.29 Nov 1290 in Herdeby, Lincolnshire, England
- b.13 Nov 1312 in Windsor Castle, Windsor, Berkshire, England d.21 Jun 1377 in Shene Palace, Surrey, England
- b.1268 in Fontainbleau, Isle de France d.29 Nov 1314 in Fontainbleau, Isle de France
- b.1292 in Paris, France d.21 Nov 1358 in Hertford Castle, Herefordshire, England
- b.1271 in Bar-Sur-Seine, France d.02 Apr 1305 in Chateau de Vincennes
- b.Mar 1340 in Ghent, Flandre-Orientale, Belgium d.03 Feb 1398 in Leicester Castle, Leichestershire, Engl
- b.~ 1240 in Brabant, Belgium d.22 Aug 1304 in Valenciennes, Nord, France
- b.~ 1286 in Avesnes, Pas-De-Calais, France d.07 Jun 1337 in Valenciennes, Nord, France
- b.~ 1242 in Luxembourg d.06 Apr 1311 in Valenciennes, Nord, France
- b.~ 1312 in Le Quesnoy, Nord, France d.15 Aug 1369 in Windsor Castle, Windsor, Berkshire, Engl
- b.12 Mar 1271 in Carenne, Isle De France d.16 Dec 1325 in Nogent-Le-Roi, Le Perray, France
- b.BET 1294 AND 1295 in Longpont, Aisne, France d.07 Mar 1342 in Fontenelle, Yonne, France
- b.1276 in Napoli, Italy d.31 Dec 1299
- b.31 Mar 1360 in Leicestershire, England d.19 Jul 1415 in Sacabem, Lisboa, Portugal
- b.16 Jan 1244 in London, Middlesex, England d.05 Jun 1296 in Bayonne, Pyrennes-Atlantiques, France
- b.1281 in Grismond Castle, Monmouthshire, Engl d.22 Sep 1345 in Monastery Of Cannons, England
- b.1248 in Arras, Pas-de-Calais, France d.02 May 1302 in Paris, France
- b.~ 1300 in Grosmont Castle, Grosmont, Monmonthshire, England d.24 Mar 1361 in Leicestershire, England
- b.~ 1250 in Of, Kempsford, Gloucestershire, England d.<07 Jul 1283
- b.1282 in Kidwelly, Caernarvonshire, Wales d.>19 Feb 1317
- b.~ 1252 in Of, Warwick, Warwickshire, England d.03 May 1306 in Elmley Castle, Worcestershire, England
- b.25 Mar 1341 in Lancaster, Lancashire, England d.17 Sep 1368 in Bolingbroke, Castle, Lincoln, Middlesex, England
- b.~ 1228
- b.~ 1275 in Buchan, Aberdeenshire, England d.10 Mar 1339
- b.~ 1235
- b.~ 1311 d.> 1356
- b.~ 1260 in Of, Buchan, Aberdeenshire, England d.1305
- b.1281 in Buchan, Aberdeenshire, England d.<10 Aug 1349
- b.~ 1263 in Of, Altyre, Morayshire, Scotland
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‌Duarte I De and Leonor D' were married in a religious ceremony on November 2nd, 1428 in Coimbra, Portugal. They had two sons and two daughters, named Afonso V De, Fernando De, Leonor De and Joana De.
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Children
Afonso V De Aviz
Afonso V De was born on January 15th, 1432. He died at the age of 49 on August 28th, 1481.
Fernando De Aviz
Fernando De was born on November 17th, 1433 in Almeirim, Portugal. He died at the age of 36 on September 18th, 1470 in Setubal, Portugal.
Leonor De Aviz
Leonor De was born on September 18th, 1434 in Torres Novas, Portugal. She died at the age of 32 on September 3rd, 1467 in Wiener Neustadt.
Joana De Aviz
Joana De was born on March 20th, 1439 in Monte Oliveto, Almada, Portugal. She died at the age of 36 on June 13th, 1475 in Madrid, Spain.