John, Prince of Portugal was a Portuguese infante, son of Afonso V and Isabella of Coimbra. He was born heir to the throne in 1451, but he died young during the same year. The title of Prince of Portugal then passed again to Infante Ferdinand, Duke of Viseu, his uncle.

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Key facts

Born: January 29, 1451
Died: 1451

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From Wikipedia (CC BY-SA 4.0).