House of Trastámara

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Castilian and Leonese royalty
House of Trastámara

Henry II and I of Leon
Children include
   John I
   Eleanor, Queen of Navarre
John I
Children include
   Henry III of Castile and II of Leon)
   Ferdinand I of Aragon, Valencia and Sicily
Henry III and II of Leon
Children include
   John II
   Maria, Queen of Aragon, Valencia, Sicily and Naples
John II
Children include
   Henry IV of Castile and III of Leon
   Isabella I
   Alfonso, Prince of Asturias
Henry IV and III of Leon
Children
   Joan, Queen of Portugal
Isabella I with Ferdinand V
Children
   Isabella, Queen of Portugal
   Juan, Prince of Asturias
   Joanna I
   Maria, Queen of Portugal
   Catherine, Queen of England
Grandchildren include
   Miguel da Paz, Prince of Portugal and Spain
Joanna with Philip I
Children
   Eleanor, Queen of Portugal and France
   Charles V, Holy Roman Emperor
   Isabella, Queen of Denmark and Norway
   Ferdinand I, Holy Roman Emperor
   Mary, Queen of Hungary and Bohemia
   Catherine, Queen of Portugal

The House of Trastámara was a dynasty of kings in the Iberian Peninsula, which governed in Castile from 1369 to 1504, in Aragón from 1412 to 1516, in Navarre from 1425 to 1479, and in Naples from 1442 to 1501.

The house took the name of the Count (or Duke) of Trastámara, a title used by Henry II of Castile, El de las Mercedes, before he became king in 1369; that is, during the civil war in which he sought to overthrow his legitimate brother Pedro of Castile. He was raised and educated by the Count Rodrigo Álvarez.

Through the Compromise of Caspe (1412), Ferdinand de Antequera, the second son of John I of Castile, was elected by the nobles of Aragón, Barcelona, and Valencia as king. This was the first cadet branch of the dynasty.

In 1425, John, the second son of the Ferdinand de Antequera, married the Navarrese queen and became Navarre's king. He reigned until his death in 1479, when his daughter Eleanor succeeded him briefly for a year.

In 1442, Alfonso V of Aragon succeeded to the Neapolitan throne by conquest. He ruled it until his death in 1458, when a younger son inherited it and began a new branch of the dynasty.

The reigns of the Trastamaran kings were characterised by a reinforcement of monarchical authority, economic development, and the expansion of the bourgeoisie.

Aragonese, Valencian and Sicilian Royalty
House of Trastámara

Ferdinand I
Children include
   Alfonso (future Alfonso V of Aragon, III of Valencia and I of Sicily and Naples)
   John (future John II of Aragon, Valencia and Navarre and I of Sicily)
   Eleanor, Queen of Portugal
Alfonso V (III of Valencia and I of Sicily and Naples)
   Ferdinand I of Naples (natural son)
John II (I of Sicily and II of Navarre)
Children include
   Eleanor, Queen of Navarre
   Ferdinand (future Ferdinand II of Aragon, Valencia and Sicily, III of Naples, IV of Castile and V of Leon)
   Blanca
   Joan, Queen of Naples
   Charles IV of Navarre
Ferdinand II (III of Naples, IV of Castile and V of Leon)
Children include
   Isabella, Queen of Portugal
   Joan, Queen of Castile
   Juan, Prince of Asturias
   Mary, Queen of Portugal
   Catherine, Queen of England
Grandchildren include
   Miguel da Paz, Crown Prince of Portugal and Spain
   Charles (future Charles I of Spain and V of the Holy Roman Empire)