Billewicz Theodorus
- First Name (LAT): Theodorus
- Source 1: Triplex philosophia rationalis, naturalis et moralis. Sub auspiciis D. Joannis Baptistae publicae disputationi proposita in Alma Universitate Vilnensi Scoietatis Jesu. folio, arkuszy nlb. About 1690. Bibl. Uniw. Warsz.
- Research 1: Estreicher
- Last Name (LAT): Billewicz
- First letter of last name: b