The Six Wives of Henry The VIII

Catherine of Aragon (Castilian: Infanta Catalina de Aragón y Castilla; 16 December 1485 – 7 January 1536) was the first wife of Henry VIII of England. Henry tried to have their twenty-four year marriage annulled in part because all their male heirs apparently died in childhood, with only one of their six children, Princess Mary (later Queen Mary I) surviving as heiress presumptive, at a time when there was no precedent for a woman on the throne. The Pope refused to allow the annulment of Henry's marriage to Catherine (primarily because he was enthralled to Catherine's nephew - the Emperor Charles V - who could not allow such an insult to his family), which set off a chain reaction that led to Henry's break with the Roman Catholic Church and his subsequent marriage to Anne Boleyn in the hope of fathering a male heir to continue the Tudor dynasty.
Born in Alcalá de Henares, Catherine was the youngest surviving child of Ferdinand II of Aragon and Isabella I of Castile. Her older siblings were Isabella, Princess of Asturias; John, Prince of Asturias; Joan I of Spain; and Maria of Castile and Aragon, Queen of Portugal. She was an aunt, among others, of Charles V, Holy Roman Emperor, John III of Portugal and their wives, Ferdinand I, Holy Roman Emperor and Henry I of Portugal.
She was a granddaughter of both John II of Castile and John II of Aragon. She was descended from the English royal house through her great-grandmother Katherine of Lancaster and her great-great-grandmother Philippa of Lancaster, both daughters of John of Gaunt. She was thus a third cousin of her father-in-law and mother-in-law, Henry VII and his wife Elizabeth of York.