- Anne Beetem Acker
(b Vienna, Austria, 1370; d Nuremberg, Germany, 1401). Viennese physician, medical astrologer, organist, and presumed harpsichord maker. The earliest dated reference to what might be a harpsichord is in a letter from Padua of 1397 that names Hermann Poll as its inventor. Poll earned bachelor’s and master’s degrees from the University of Vienna between ...