Isabella of Aragon, Princess of Asturias

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Isabella of Asturias (1470–15 August 1498) was the Queen Consort of Portugal and the eldest daughter and heiress presumptive of King Ferdinand II of Aragon and Queen Isabella of Castile.

In 1490 Isabella married Afonso, Crown Prince of Portugal, the heir of John II of Portugal, who died afterwards in a hunting accident in 1495. Though it was an arranged marriage, Isabella and Alfonso quickly fell in love, for she said, when she returned to Spain, that she would never marry again and enter a convent. But her parents would not have any of this, and in 1497 she married King Manuel I of Portugal (who was Afonso's uncle and John II's successor to that throne). At the 1497 death of her only brother, John, she became Princess of Asturias as she was recognized as the heir of Castilian kingdom. In 1498 while giving birth to Miguel da Paz, heir to the kingdoms of Spain and Portugal, she died (Miguel died two years later). Manuel's chance to become king-consort of Spain vanished with Isabella's death, and main hope of uniting all Iberian kingdoms vanished at Miguel's death.

Castilian and Leonese royalty
House of Trastámara

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

After 1500, Joanna of Castile (Isabella's next sister and Miguel's aunt) became the heiress of Spain, eventually bringing those kingdoms to the Habsburgs. However, the Iberian Union took place about a hundred years later, in 1580, when the Habsburg king, Philip II of Spain, grandson of Joan the Mad and of Manuel of Portugal, acquired Portugal and its dominions.

Isabella's sister, Maria of Aragon, then married Isabella's widowed husband and gave birth to eight children. Isabella's youngest sister, Catalina, would later become Queen consort of England, as the first wife of Henry VIII.

House of Trastámara
Born: 1470
Died: 1498
Preceded by
Prince Juan
Princess of Asturias
1497-1498
Succeeded by
Infante Miguel of Portugal
Preceded by
Leonor of Viseu
Queen Consort of Portugal
1497 - 1498
Succeeded by
Maria of Aragon