Jean I d'Alençon, duc d'Alençon, comte de Perche, was born 9 May 1385 in Château d'Essay, Essay, France to Pierre II d'Alençon (1340-1404) and Marie Chamaillard (c1345-1425) and died 25 October 1415 at the Battle of Agincourt of unspecified causes. He married Marie de Bretagne (1391-1446) 26 June 1396 JL . Notable ancestors include Charlemagne (747-814), Alfred the Great (849-899), Henry II of England (1133-1189), William I of England (1027-1087), Hugh Capet (c940-996). Ancestors are from France, Spain, Germany, the United Kingdom, Russia, Ukraine, Hungary, Belgium, the Netherlands, Italy, the Byzantine Empire, Sweden, Belarus, Canaan.


Offspring of Jean I, duc d'Alençon and Marie de Bretagne (1391-1446)
Name Birth Death Joined with
Pierre d'Alençon (1407-1408)
Jean II d'Alençon (1409-1476) 2 March 1409 Argentan, Orne, France 8 September 1476 Paris, France Jeanne d'Orléans (1409-1432)
Marie d'Armagnac (1420-1473)

Marie d'Alençon (1410-1412)
Jeanne d'Alençon (1412-1420)
Charlotte d'Alençon (1413-1435)

Common ancestors of Jean I d'Alençon (1385-1415) and Marie de Bretagne (1391-1446)

  1. Charles de Valois (1270-1325)
  2. Marguerite d'Anjou et Maine (1274-1299)
  3. Philippe III Capet (1245-1285)

Footnotes (including sources)

‡ General
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