Wife of Friedrich I. of Prussia, born in Hanover, daughter of Electress Sophia; famous in her day both as a lady and a queen; was, with her mother, of a philosophic turn; "persuaded," says Carlyle, "that there was some nobleness for man beyond what the tailor imparts to him, and even very eager to discover it had she known how"; she had the philosopher Leibnitz often with her, "eagerly desirous to draw water from that deep well—a wet rope with cobwebs sticking to it often all she got—endless rope, and the bucket never coming to view" (1668-1705).