The Battle of Morella (14 August 1084×88), southwest of Tortosa, was fought between Sancho Ramírez, King of Aragon and Navarre, and Yusuf al-Mu'tamin, King of Zaragoza, while the former was engaged in a campaign of conquest against the latter. All surviving sources for the battle are either later by a generation or literary in character, and they are confused on the chronology and dating of the event.