Christoph Ulrich Hahn (1805-1881), German school teacher, pastor and prominent figure in the development of deaconry [Unknown authorUnknown author / Internet, Website of the Evangelische Landeskirche in Württemberg which mentions the Württembergische Landesbibliothek as source -- Public domain -- http://commons.wikimedia.org/wiki/File:Christoph Ulrich Hahn (1805-1881).jpg]