April 18, 1161: Theobald, Archbishop of Canterbury, dies. He repeatedly quarreled with his superiors about church appointments and other political questions, but he the influential French abbot Bernard of Clairvaux supported him. Theobald helped strengthen the English church and build the career of Thomas Becket, whom he recommended as chancellor to England's newly crowned King Henry.
April 18, 1587: English Protestant historian John Foxe, author of Actes and Monuments of Matters Happenning to the Church (the shorter version is now known as Foxe's Book of Martyrs), dies at age 71 (see issue 72: How We Got Our History).
April 18, 1874: Having died nearly a year earlier (May 1, 1873) in what is now northern Zambia, missionary-explorer David Livingstone (whose remains had been brought, as his tombstone reads, "by faithful hands over land and sea") is interred in London's Westminster Abbey (see issue 56: David Livingstone).
May 26, 1521: The Edict of Worms formally condemns Martin Luther's teachings and he is put under the ban of the Holy Roman Emperor. Those who fear for his life then kidnap Luther and hide him in Frederick’s Wartburg castle (see issue 34: Luther's Early Years).
May 26, 1232: Pope Gregory IX sends the first Inquisition team to Aragon, Spain.
May 26, 1647: Massachusetts enacts a law forbidding any Jesuit or Roman Catholic priest from entering Puritan jurisdictions. Second-time offenders ...