A legend holds the rulers of this kingdom swore to
A legend holds the rulers of this kingdom swore to uphold the law in the "Oath of Sobrarbe." Its royalstandard was a white shield quartered by the red cross of St. George, with a Moor's head in each of thequarters. One king of this place died fighting against the crusaders in the Battle of Muret a year afterallying with Alfonso VIII at the Battle of Las Navas de Tolosa. Pedro III of this place was excommunicatedafter aiding anti-Angevin forces in the Sicilian Vespers. Its kings lived in the Aljaferia Palace after it wasseized from the Emirate of Zaragoza. In 1162, this kingdom united with Barcelona, and under the CatholicMonarchs, it united with its western neighbor. For 10 points, name this kingdom that Ferdinand united withCastille.
A legend holds the rulers of this kingdom swore to uphold the law in the "Oath of Sobrarbe.
Aragon