Ignatius of Loyola was a 16th-century Spanish priest, theologian, and soldier who established the Society of Jesus, commonly known as the Jesuits. Born in the Basque region around 1491, he transitioned from a military life to a religious one following a severe leg injury sustained during the Battle of Pamplona. After a period of spiritual reflection, he founded the religious order in Paris in 1541, serving as its first Superior General. His spiritual teachings and emphasis on missionary work and education played a significant role in the Counter-Reformation.