Caspar Ziegler
... that Caspar Ziegler, who wrote a hymn on which Bach based a Christmas cantata, was professor of law and Rektor of the University of Wittenberg?
... that <b id="mwAus"><a href="./Caspar_Ziegler" id="mwAuw" rel="mw:WikiLink" title="Caspar Ziegler">Caspar Ziegler</a></b>, who wrote a hymn on which <a href="./Johann_Sebastian_Bach" id="mwAu0" rel="mw:WikiLink" title="Johann Sebastian Bach">Bach</a> based <a href="./Ich_freue_mich_in_dir,_BWV_133" id="mwAu4" rel="mw:WikiLink" title="Ich freue mich in dir, BWV 133">a Christmas cantata</a>, was professor of law and <i id="mwAu8">Rektor</i> of the <a class="mw-redirect" href="./University_of_Wittenberg" id="mwAvA" rel="mw:WikiLink" title="University of Wittenberg">University of Wittenberg</a>?