were discovered, which, while revealing a hope to bring over Augustus to Calvinism, cast some aspersions upon the elector and his wife. Augustus ordered the leaders of the Crypto-Calvinists to be seized, and they were tortured and imprisoned. He restored genuine Lutheranism to Saxony and began to work on a way to bring unity among Lutherans by commencing a process that would lead to the publication, in 1580, of the Lutheran Book of Concord. Augustus personally sponsored the publication of the Book of Concord, a book containing the various Lutheran Confessions of faith, which was signed by over 8,100 ministers and professors and nearly 30 territories, states and cities in Germany. This strict form of Lutheranism was declared binding upon all the inhabitants of Saxony, and many persons were banished from the country. The change in Saxony, however, made no difference to the attitude of Augustus on imperial questions. In 1576 he opposed the proposal of the Protestant princes to make a grant for the War against the Ottoman Empire conditional upon the abolition of the clause concerning ecclesiastical reservation, and he continued to support the Habsburgs. Territorial expansion Much of the elector's time was devoted to extending his territories. In 1573 he became guardian to the two sons of John William, duke of Saxe-Weimar, and in this capacity was able to add part of the county of Henneberg to the Electorate of Saxony. His command of money enabled him to take advantage of the poverty of his neighbours, and in this way he secured Vogtland and the county of Mansfeld. In 1555 he had appointed one of his nominees to the bishopric of Meissen, in 1561 he had secured the election of his son Alexander as bishop of Merseburg, and three years later as bishop of Naumburg; and when this prince died in 1565 these bishoprics came under the direct rule of Augustus. Second marriage and death On 1 October 1585 the Electress Anna died. Three months later, on 3 January 1586, in the city of Dessau, Augustus married secondly with Agnes Hedwig, a daughter of Joachim Ernest, Prince of Anhalt. The bride was only 13 years; the groom, almost 60. August died one month after his new marriage, and was buried at Freiberg Cathedral. His only surviving son, Christian I, was his successor. Writing and collections Augustus wrote a small work on agriculture entitled Künstlich Obstund Gartenbüchlein. He