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The Year of Isabella I of Castile - Joan of Portugal, A Queen in an impossible situation (Part one) - History of Royal Women
The future Queen of Castile and sister-in-law to Queen Isabella I of Castile, Joan of Portugal, was born on 31 March 1439 as the daughter of Edward, King of Portugal, and Eleanor of Aragon. Four elder siblings siblings also survived to adulthood, Afonso, King of Portugal, Ferdinand, Duke of Viseu, Eleanor, later Holy Roman Empress, and Catherine.
Moniek Bloks