Dom José, Prince of Brazil, Duke of Braganza was the heir apparent to the Kingdom of Portugal until his death in 1788, as the eldest child of Queen Dona Maria I of Portugal and King Dom Pedro III of Portugal, members of the House of Braganza. Wikipedia
Born: August 20, 1761, Lisbon, Portugal
Died: September 11, 1788 (age 27 years), Lisbon, Portugal
Great-grandparents: Peter II of Portugal, Maria Sophia of Neuburg, Archduke Friedrich, Duke of Teschen, and more
Grandparents: John V of Portugal and Maria Anna of Austria
Parents: Peter III of Portugal
Spouse: Infanta Benedita of Braganza (m. 1777)
Siblings: John VI of Portugal