About Theophilus
Theophilus is a male given name with a range of alternative spellings. Its origin is the Greek word Θεόφιλος from θεός and φιλία can be translated as "Love of God" or "Friend of God", i.e., it is a theophoric name, synonymous with the name Amadeus which originates from Latin, Gottlieb in German and Bogomil or Bogumił in Slavic.
Biography source:
Wikipedia