Bohemia, 1310 (Modern Czechoslovakia)
"In 1310, two hundred years before Luther's theses, the Bohemian brethern constituted one fourth of the population of Bohemia, and that they were in touch with the Waldenses who abounded in Austria, Lombardy,. Bohemia, north Germany, Thuringia, Brandenburg, and Moravia. Erasmus pointed out how strictly Bohemian Waldenses kept the seventh day Sabbath." Armitage, "A History of the Baptists," p.313; Cox, "The Literature of the Sabbath Question," vol. 2, pp. 201-202