On 3rd January 1521, Pope Leo X issued the papal bull Decet Romanum Pontificem which excommunicated Martin Luther from the Catholic Church. Martin Luther was a German priest, professor of theology and most famously a reformer. His life and his beliefs changed the face of religion throughout Europe and saw many people break with the Catholic Church in the 16th century.

Martin Luther was born on 10th November 1483 in Eisleben, Saxony (part of the Holy Roman Empire at the time), to Hans and Margarethe Luther. The following year Hans moved his family to Mansfeld where he owned a series of mines and smelters. At the age of seven, Luther started at Mansfeld School. At the age of fourteen, Luther went to Magdeburg before returning to Eisleben to complete his studies in grammar, rhetoric and logic. It is reported that Luther hated his time studying at Eisleben. At the age of nineteen Luther attended the University of Erfurt where he received his master’s degree in 1505.