Question: When did Igor Yaroslavich's father die?
Sentence (from "Yaroslav the Wise"): Yaroslav I, Grand Prince of Rus, known as Yaroslav the Wise or Iaroslav the Wise (c. 978 – 20 February 1054) was thrice grand prince of Veliky Novgorod and Kiev, uniting the two principalities for a time under his rule.
Relevant evidence: Yes