(1704–76). Amsterdam-born architect whose Rathaus (Town Hall), 2 Am Alten Markt, Potsdam (1753), was based on Palladio's unrealized Palazzo Angarano. He worked with Büring on St Hedwig's RC Cathedral, Berlin (1770–3). His son, Michael Daniel Philipp (d.1805), executed Unger's design for the Royal Library, Forum Fridericianum, Berlin (1774–80), and also designed Schloss Bellevue, Berlin (1785), in the Neo-Classical style.
From A Dictionary of Architecture and Landscape Architecture in Oxford Reference.