From Philip of Castile to King Henry of England, there were many unhappy marriages and affairs that led to inevitable heartbreak.
Sources:
Salvatore Poeta: “The Hispanic and Luso-Brazilian World: From Mad Queen to Martyred Saint: The Case of Juana La Loca Revisited in History and Art on the Occasion of the 450th Anniversary of Her Death.” Hispania (2007)
https://www.habsburger.net/en/chapter...
Liselotte von der Pfalz: Ein Leben am Hof Ludwigs XIV. by Karin Feuerstein-Praßer
-https://www.mdr.de/geschichte/weitere...