Austrian painter. He studied at the Akademie der Bildenden Künste in Vienna from 1823, where he was taught by Vincenz Georg Kininger and Leopold Kupelwieser. His training under the latter had a lasting influence on his work, for it was during this period (1826-28) that he learnt about Italian painting of the Quattrocento. In 1828 he went to Rome, where he joined the Nazarenes (Philipp Veit, Friedrich Overbeck and Joseph Führich). He sketched a Visitation, and an Annunciation for the church of Trinità dei Monti in Rome; these were painted as frescoes by his friend Josef Tunner. He worked with Overbeck on the Portiuncula Chapel in Assisi. In 1833 he returned to Vienna, then in 1839 moved to Frankfurt. He worked with others on the wall painting of Frankfurt's historic town hall, the "Römer". From 1850 he was teacher at the art institute Städelsches Kunstinstitut; decorated several churches with frescoes and stained glass (e.g. Cologne Cathedral). In 1878-79 he created the designs of stained glass for the Vienna Votivkirche. //