Giacomo Meyerbeer
When Spontini died Meyerbeer was made Generalmusikdirektor in Berlin.  His opera  Les Huguenots had at first been forbidden in Germany, but now it was allowed to be performed.  As court composer he wrote a grand opera called Ein Feldschlag in Schlesien (A  Battle in Silesia), but it never became internationally famous.  The main part in the opera was sung by Jenny Lind.