Jaime I of Aragon, also known as Jaime I the Conqueror, was a significant medieval king who ruled from 1213 to 1276. He was born in 1208 and became the king of Aragon and Catalonia. Jaime is best known for his military campaigns that expanded his kingdom, particularly the conquest of Valencia from the Moors. Under Jaime's leadership, Aragon grew in power and influence, establishing a strong Christian presence in the Iberian Peninsula. He also promoted the use of the Catalan language and culture, contributing to the region's identity. His reign is often seen as a pivotal moment in the history of Spain.