Coat of arms of Aragon
|Coat of arms of Aragon|
First quarter: The Sobrarbe tree or the Ainsa shield represents the legendary Kingdom of Sobrarbe and the establishment of Aragonese liberty.
Third quarter: The St George's Cross with four severed Moors' heads represents the conquest as Aragon extended into the plains, with tradition stating that the saint helped the Aragonese in the battle. This quarter inspired the coat of arms and flag of Sardinia since Aragon ruled Sardinia from in the 14th and 15th centuries.