João, Prince of Brazil was the first child of Peter II of Portugal and Maria Sophia of Neuburg. He was made Prince of Brazil and Duke of Braganza upon his birth. Wikipedia
Born: August 30, 1688, Lisbon, Portugal
Died: September 17, 1688 (age 18 days), Lisbon, Portugal
Parents: Peter II of Portugal and Maria Sophia of Neuburg
Grandparents: John IV of Portugal, Luisa de Guzmán, Philip William, Elector Palatine, and more
Great-grandparents: Teodósio II, Duke of Braganza, Ana de Velasco y Girón, Wolfgang Wilhelm, Count Palatine of Neuburg, and more
Siblings: John V of Portugal