Complex sentence: In Dresden on 9 March 1932, Johann married "Feodora Freiherrin von der Horst"-as this was considered a morganatic marriage and the Prince was forced to cede his own succession rights.
Split into simpler sentences: In Dresden on 9 March, 1932, Johann married with Feodora Freiherrin von der Horst. This was considered a morganatic marriage and the Prince was forced to cede his own succession rights.