Saint Leopold of Babenberg was a nobleman and the Duke of Austria in the 11th century. He is known for his efforts in promoting Christianity and establishing monasteries, which helped spread the faith in the region. Leopold was also a protector of the Church and played a significant role in the development of the Austrian state. He was canonized as a saint due to his pious life and dedication to the welfare of his people. Saint Leopold is the patron saint of Austria and is often depicted in religious art, symbolizing his importance in the history of the country and the Catholic Church.