 Proponents allege that Yaroslav's true age was falsified by Nestor, who attempted to represent him as 10 years older than he actually had been, in order to justify Yaroslav's seizure of the throne at the expense of his older brothers.The Primary Chronicle, for instance, states that Yaroslav died at the age of 76 in 1054 (thus putting his birth at 978), while dating Vladimir's encounter and marriage to Yaroslav's purported mother, Rogneda, to 980.Elsewhere, speaking about Yaroslav's rule in Novgorod (1016), Nestor says that Yaroslav was 28, thus putting his birth at 988.