in pharmacology Francis Kilcoyne (died 1985) – President of Brooklyn College Georges Lemaître – Physicist and Astronomer. Proposed what would become known as the Big Bang Theory. Georges-Henri Lévesque – Sociologist Gerard Timoner III – The current master of the Dominican Order Eustáquio van Lieshout – Did work in Brazil Michael J. McGivney – Founder of the Knights of Columbus Heinrich Maier – Head of an important resistance group against Nazi Germany Columba Murphy – Involved in gaining an Edict of Toleration for Hawaiian Catholics Hugh O'Flaherty – World War II hero Nemesi Marqués Oste – Rector in Andorra and political figure there Peter Pernin – Survivor and memoirist of the Peshtigo fire Wolfgang Rösch – Vicar general of Limburg Jean-Baptiste de La Salle – A founder of the Institute of the Brothers of the Christian Schools Abraham a Sancta Clara – Catholic preacher in Austria Francis Xavier – Jesuit missionary to Japan Vinkenti Peev – Bulgarian Capuchin friar Thomas Byles – English priest who stayed on board the sinking RMS Titanic hearing confessions Michael Nazir-Ali – Former prominent Anglican bishop who became Catholic and was ordained a priest on the 30th of October, 2021 Eugine Mattioli - Longest serving Catholic missionary in Arabia Mihalj Šilobod Bolšić - Roman Catholic priest, mathematician, writer, and musical theorist primarily known for writing the first Croatian arithmetic textbook Arithmatika Horvatzka (published in Zagreb, 1758) Eastern Catholic Churches Ghevont Alishan – Priest of the Armenian Catholic Church who designed Armenia's first modern flag. Walter Ciszek – Byzantine Rite member of the Society of Jesus who was imprisoned at Lubyanka (KGB). Eddie Doherty – Ordained a priest in the Melkite Greek Catholic Church. Ed Evanko – Actor who became a Ukrainian Catholic priest. Nimattullah Kassab Al-Hardini – Catholic saint. Louis Massignon – Scholar of Islam who transferred to the Melkite Greek Catholic Church after converting to Catholicism and later became a priest. Alphonse Mingana – Chaldean Catholic Church priest and Orientalist. Youakim Moubarac – Maronite Church – priest and scholar. Joseph Raya – a Melkite Greek Catholic priest (later archbishop) active in the U.S. civil rights movement and advocate of Israeli Christian Arabs. Catholic exorcists Father Ernst Alt Father Candido Amantini Gabriele Amorth – Founder of the International Association of Exorcists Father Raymond J. Bishop William S. Bowdern – Participated in an exorcism of Roland Doe in 1949. The incident became the basis of William