Ivan Dmitrievich of Yuryev-Polsky

Chinese name	伊万·德米特里耶维奇
Life	生卒年不详
Country	Yuriev-Polsky
Birthplace	Yuryev-Polsky
Dynasty	rurikovich_dynasty
Culture	Muscovite
Religion	Orthodoxy

From the mod
Descriptions for Every Historical Character

Ivan Dmitrievich, a conjectural prince of Yuryev-Polsky, is held by historians to have been a son of Prince Dmitry Svyatoslavich, ruling the appanage after him, and father of Yaroslav Ivanovich, named prince of Yuryev in 1340.

References

ru.wikipedia.org/wiki/Дмитрий_Святославич_(князь_юрьевский)
ru.wikipedia.org/wiki/Юрьевское_княжество