Complex sentence: Baptized the very next day, he was given the name of Hansl, or John, by which he would be known for more than twenty years until he entered a hermitage and took the name of Clement.
Split into simpler sentences: Baptized the very next day, he was given the name of Hansl, or John. He would be known that way for more than twenty years until he entered a hermitage and took the name of Clement.