This is 100% true. After that the Vladikas took over and then in 1696, around 180 years later, the Petrović family takes over. Also, how is Zeta not the successor of the Kingdom of Duklja when it is. Well, during the time Duklja existed, it was beginning to be called Zeta in the mid-1100s and generally, why have been seing Zeta used a lot in the last few paragraphs in the history section in the Duklja article? Well?