Peter I of Aragón, also known as Peter the Great, was a king who ruled from 1094 to 1104. He was a member of the House of Jiménez and played a significant role in the early history of the Crown of Aragón. His reign was marked by military campaigns against the Moors in the Iberian Peninsula, contributing to the Christian Reconquista. Peter I is also known for his efforts to consolidate power and expand his kingdom. He established alliances through marriage and diplomacy, which helped strengthen the Aragonese territories. His legacy includes the foundation of a more unified Aragón, setting the stage for future rulers.