21 April 1853 – Father Stephen Theodore Badin Basilica of the National Shrine of the Immaculate Conception Modern Biography Catholic Pioneers of America “Who Was Stephen Badin?” American Catholic History: Father Stephen Badin Art & Architecture Wikimedia Commons Find a Grave
20 April – Blessed John Finch Martyrs to the Catholic faith : memoirs of missionary priests and other Catholics of both sexes that have suffered death in England on religious account from the year 1577 to 1684 / by Bishop Challoner v. 1-2 Modern Hagiography Bibliotheca Sanctorum Martyrologium Romanum A Menology of England and Wales
20 April – Blessed Francis Page Object: P. Franciscus Pagius Anglus Modern Hagiography Bibliotheca Sanctorum Martyrologium Romanum A Menology of England and Wales Mementoes of the English Martyrs and Confessors for Every Day in the Year