The Church of São Julião was originally built in the second half of the 13th century. According to tradition, it was sponsored by the fishermen of Setúbal. It is known that, at the end of the 15th century, the church was connected to the Palace of Jorge de Lencastre, Master of the Order of Santiago and Duke of Aveiro. The Duke used the Church of São Julião as his private chapel until around 1510