24: The Prince’s Diploma

In a display case, we show the Prince’s Diploma of 1834, the elevation of Count Peter to the rank of prince by the Prussian King Frederick William III, as a sign of gratitude for liberating Prussia from the yoke of Napoleon. 

This allowed him, as well as his descendants, to bear the title of “Serene Highness”. 

Tsar Nicholas I declared his appreciation to “the saviour of Saint Petersburg” by appointing him field marshal in 1826.