“ After the peace of Augsburg the elector mainly confined his attention to Brandenburg, where he showed a keener desire to further the principles of the Reformation. By his luxurious habits and his lavish expenditure on public buildings he piled up a great accumulation of debt, which was partly discharged by the estates of the land in return for important concessions. ”

“ He became elector of Brandenburg on his father’s death in July 1535, and undertook the government of the old and middle marks, while the new mark passed to his brother John. Joachim took a prominent part in imperial politics as an advocate of peace, though with a due regard for the interests of the house of Habsburg. ”

“ He attempted to make peace between the Protestants and the emperor Charles V. at Frankfort in 1539, and subsequently at other places; but in 1542 he led the German forces on an unsuccessful campaign against the Turks. ”