Saint Eustace, also known as Eustachius, is a Christian martyr and saint celebrated for his faith and perseverance. He is often depicted in art with a stag, symbolizing a vision he had while hunting. This vision led him to convert to Christianity, along with his family. His feast day is observed on September 20. The story of Saint Eustace is associated with themes of sacrifice and divine guidance. He is considered the patron saint of hunters, and his life is a reminder of the importance of faith in overcoming life's challenges. His legacy continues to inspire many in the Christian community.