I found rather interesting note about Prince Paul...In 1919,while staying in Italy,he wanted to marry an "Italian Princess whose mother was German" and asked King Alexander I(regent at the time) for his aproval,but was denied due to political reasons and ordered to return immediately to Serbia...faith of the Princess was not mentioned!
I thought that the Princess in question could be Bona Margherita or maybe her sister Adelaide...they were daughters of Prince Tomasso of Savoy-Genoa and German Princess Isabella of Bavaria...anyone knows anything about this or could there be any other Italian Princess whose mother was German?I only found daughters of Duke of Calabria and Maria of Bavaria who were similar in age and unmarried at the time(1919)...