German architect. A pupil of Schinkel, he was Court Architect to the Grand Dukes of Mecklenburg-Schwerin, for whom he transformed the Schloss at Schwerin into a Picturesque pile of the Northern Renaissance Revival (1844–57), although Stüler and Strack were responsible for the interiors and completing the building, and the overall scheme owed something to an earlier project by Semper of 1842. Like his master, Schinkel, Demmler cunningly mixed medieval and Classical elements in some of his designs, notably the Rathaus (Town Hall—1835) and the Zeughaus (Arsenal—1840–4), both in Schwerin.
Ende (1971);Ohle (1960);Stüler et al. , (1869)