 From 1525, the rulers were traditionally Lutheran and widely acknowledged as defenders of the Protestant faith, although – beginning with Augustus II the Strong, who was required to convert to Roman Catholicism in 1697 in order to become King of Poland – its monarchs were exclusively Roman Catholic.That meant Augustus and the subsequent Electors of Saxony, who were Roman Catholic, ruled over a state with an almost entirely Protestant population.In 1925, 90.3% of the Saxon population was Protestant, 3.6% was Roman Catholic, 0.4% was Jewish and 5.7% was placed in other religious categories.