Justine Siegemundin, court midwife to the Elector of Brandenburg, was the most famous of the German midwives. For twelve years she practiced among the poor peasants of her region, teaching other midwives and finally was appointed midwife to the Royal Family in Prussia. She kept careful notes of her cases and published in 1690 her famous book at her own expense, illustrated with 43 instructive copperplates.