Justinas Bonaventura Pranaitis or Pronaitis (Russian: Иустин Бонавенту́ра Пранайтис; 27 July 1861 – 28 January 1917) was a Lithuanian Catholic priest and Professor of Hebrew at the St. Petersburg Roman Catholic Theological Academy. He is best known as the author of the antisemitic text The Talmud Unmasked, and his subsequent involvement in the Bellis trial. Source: Wikipedia (en)