Saint Aemilian, also known as Saint Aemilian of Cogolla, was a Christian monk and abbot who lived during the 6th century. He is best known for founding the monastery of San Millán de la Cogolla in Spain, which became an important center for monastic life and learning. His life is celebrated for his dedication to prayer, asceticism, and the spread of Christianity in the region. Saint Aemilian is venerated in both the Roman Catholic Church and the Eastern Orthodox Church. His feast day is observed on July 12. He is often depicted in religious art with symbols of monastic life, reflecting his commitment to faith and community.