Analysis of information sources in references of the Wikipedia article "Гасан I" in Russian language version.
As the head of the principality of Tsar, we find at the end of the twelfth century another Prince Hasan, married to another daughter of Sarkis Zakarian. Probably due to the death of her husband, Dop took over leadership of the domain which grew by virtue of his unification whith Haterk.
