 During this reign there were fourteen families with the rank of Serdar (Count), namely, Petrović-Njegoš, Vukotić, Đurašković, Martinović, Perović, Plamenatz, Drekalović, Mijušković, Bošković, Božović, Đulović, Medenica, Vlahović and Laketić.In the diploma creating Nikola Mihailov Vasojević an hereditary "Knez" (Prince), Petar II signed the document in Cetinje as "Prince Petar Petrović-Njegoš, Vladika (Prince-Bishop) and Gospodar (Lord) of Montenegro and Brda".The diploma establishes a noble lineage for the new Prince Nikola Mihailov as a direct descendant of Prince Radonja of Holmia (Brda) (himself raised to the rank of Prince by Stephen Dušan "the Mighty", Emperor of the Serbs and Greeks, in 1346.