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).
August 18, 1688: John Bunyan, author of Pilgrim's Progress preaches his last sermon, in London (see issue 11: John Bunyan).
August 18, 1732: In an emotional farewell service, Moravian Christians at Herrnhut sing 100 hymns and commission Leonard Dober and David Nitschmann as missionaries to slaves in the West Indies. Herrnhut, a community of only 600 members sent more than 70 missionaries between 1732 and 1742 (see issue 1: Nicolaus Zinzendorf).