The War of the Two Peters was fought from 1356 to 1375 between the crowns of Castile and Aragon. The conflict was a struggle between two claimants to the throne of Castile, Peter of Castile and Peter IV of Aragon. The former Peter was supported by England and several English nobles led by Edward III and his son, while the latter Peter was supported by France. The conflict also brought in the involvement of the kingdoms of Navarre and Portugal. The war resulted in Aragon gaining the upper hand, but it also devastated its economy that was already reeling from the effects of the Black Death.

Teruel is a city in Aragon, located in eastern Spain, and is also the capital of Teruel Province. It had a population of 35,900 as of 2022, making it the least populated provincial capital in Spain. It is noted for its harsh climate, with a wide daily variation on temperatures and its renowned jamón serrano, its pottery, its surrounding archaeological sites, rock outcrops containing some of the oldest dinosaur remains of the Iberian Peninsula, and its famous events: La Vaquilla del Ángel during the weekend closest to 10 July and "Bodas de Isabel de Segura" around the third weekend of February.