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.
Uroš Petrović
Petrović is born in Gornji Milanovac, Socialist Republic of Serbia within Yugoslavia, now Serbia.
He is best known for his unusual novels, "Riddle Tales I - V" (Original title – "Zagonetne priče") serial, "Mysteries of Ginkgo Street" (Original title – "Misterije Ginkove ulice") and the first Serbian horror for children " The Fifth Butterfly" (Original title – "Peti leptir"). "Dark Secrets of Ginkgo Street" and "Marta's Great Mysterious Adventure" are also an innovative form - "novels made of riddles". Awarded for books and photographs. Chairman of Serbian Mensa (2008. - 2013.). Founder of Mensa World Photo Cup. 
Co-author of NTC System of learning and author of Riddle questions concept.