 Complete the following phrase:  Upon the death of the childless Charles Frederick Albert, Margrave of Brandenburg-Schwedt in 1762, his estate reverted to the crown. After the Treaty of Hubertusburg, Frederick II granted these fortunes to the two officers for whom he had particular personal gratitude: Hans Sigismund von Lestwitz received the estate of ; and Joachim Bernhard von Prittwitz, who had escorted the king to safety from the battlefield at the 