1039

Yaroslav waged campaigns against the Baltic Yamians (Hämäläiset, Finland) and Chudians (Sami, Finland or Estonians).

• 1038-1041 Yaroslav waged campaigns against the Lithuanian Yatvingians, Mazovia

• 1030-1061 Estonia, as Yaroslav the Wise of Novgorod and Kiev raids the Estonian fortress of Tarbatu and founds a fort named Yuryev. Occupied until 1061

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