Among other things, on this day (June 13) in 1774, Rhode Island became the first of Britain’s North American colonies to ban the importation of slaves, and on this day in 1525, Martin Luther, the rebel priest who ignited the Protestant Reformation when he nailed his Ninety-five Theses on the door of the All Saints’ Church in Wittenberg, Germany, married Katharina von Bora. (Pictured below are three portraits of von Bora.)