Frederick was ennobled by the Austrian Emperor on 25 August 1808 and on 17 February 1853 the Duke Ernst II of Saxe-Coburg-Gotha created him Freiherr von Rohmann , named after the place of his birth .
On February 17 , 1853 the Duke Ernst II of Saxe-Coburg-Gotha created him Freiherr von Rohmann , named after the place of his birth .