Petar II Petrović-Njegoš
Petar II Petrović-Njegoš was born Radivoje "Rade" Petrović on in the mountain village of Njeguši, near Cetinje. His father, Tomislav "Tomo" Petrović (b. 1762–63), was a member of the Petrović clan of the Njeguši tribe of Katuni "nahiya". Njegoš's mother, Ivana Proroković, hailed from the hamlet of Mali Zalaz and was the daughter of Njeguši captain Lazo Proroković. There is no reliable information about her exact year of birth, but it is believed that she was about ten years younger than her husband. Tomo and Ivana had five children; their eldest son was Petar ("Pero"), Rade was their middle son and Jovan ("Joko") was their youngest. The couple's daughters were named Marija and Stana; Marija was married to a Montenegrin chieftain named Andrija Perović, the "serdar" (count) of Cuce, while Stana was married to Filip Đurašković, the "serdar" of Rijeka Crnojevića.
Petar II Petrović-Njegoš
It was only then that Petar entertained the possibility of extending his throne to the teenaged Njegoš and took steps to further his education. The seventeen-year-old was again sent to the Cetinje Monastery and mentored at its seminary. Petar then introduced him to state matters, trusting him with the writing of official letters and orders on his behalf. He died of old age on , without having publicly named a successor. Prior to his death, the elderly "vladika" had dictated his will and testament to Njegoš's old mentor, Milutinović, where he named Njegoš as his successor and granted all of his ecclesiastical and secular powers to him. The will also cursed anyone who trampled over Montenegro's traditional bonds with Russia in exchange for better relations with Austria, swearing that leprosy would strike them down. Some Montenegrins hostile to the Petrović clan alleged that Milutinović had fabricated the document in order to make Njegoš "vladika", pointing to their close friendship as proof. Several scholars have raised the possibility that the will was indeed a forgery, though most modern historians believe that it was genuine.