Yaroslav Ivanovich was a prince of Yuryev-Polsky mentioned in 1340.
Characters Yaroslav Ivanovich of Yuryev-Polsky Yaroslav Ivanovich was a prince of Yuryev-Polsky mentioned in 1340. Referencesru.wikipedia.org/wiki/Дмитрий_Святославич_(князь_юрьевский)ru.wikipedia.org/wiki/Юрьевское_княжество