Yuri Dolgorukiy

Yuri I Vladimirovich Dolgorukiy (c. 1099–1157), a son of Vladimir Monomakh, ruled Rostov and Suzdal from 1108 and built the northeastern backwater into Vladimir-Suzdal. After clashing with the Rostov boyars he moved his capital to Suzdal in 1121 and founded fortified towns including Pereslavl-Zalessky, Yuriev-Polsky and Dmitrov.

In 1147 he met his ally Sviatoslav Olgovich at Moscow, and in 1156 he fortified the settlement, earning the name founder of Moscow. He twice seized Kiev and died there, apparently poisoned, in May 1157.