In January 1160, her father and Ramón Berenguer IV, Count of Barcelona, negotiated the marriage of Mafalda to Alfonso, future King Alfonso II of Aragon[3][4] who was three or four years old at that time. After the death of Ramón Berenguer IV in the summer of 1162, King Ferdinand II of León convinced his widow, Queen Petronilla, to cancel the infante's wedding plans with Mafalda and for Alfonso to marry instead Sancha, daughter Alfonso VII of León and his second wife Queen Richeza of Poland.[5]
This did not compromise the establishment of long-lived good relations between Portugal and Aragon, since Mafalda's younger brother Infante Sancho (future Sancho I of Portugal) married Dulce Infanta of Aragon, sister of Alfonso II in 1174.[6][7]
Rodrigues Oliveira, Ana (2010). Rainhas medievais de Portugal. Dezassete mulheres, duas dinastias, quatro séculos de História (in Portuguese). Lisbon: A esfera dos livros. ISBN978-989-626-261-7.
* also an infanta of Spain and an archduchess of Austria,** also an imperial princess of Brazil,*** also a princess of Saxe-Coburg and Gotha, Duchess in Saxony,◙ Also a princess of Braganza,ƒ title of pretense
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