Vyatka Land

While the Permians were its original inhabitants, it was gradually settled by Slavic settlers whose arrival is traditionally dated to the late 12th century.

Ten years later, the prince Simeon Dmitrievich [ru] of Suzdal ruled in Vyatka, possibly as a vassal of the Golden Horde.

Jonah, the metropolitan of Kiev and all Rus', accused the people of Vyatka (vyatchane) of cruelty, destroying churches and selling captives into slavery in 1452.

[8] By that time the war had ended in victory for Vasily II and he subsequently organised several campaigns to subdue Vyatka.

When Ivan III gathered forces to attack Kazan in the following year, Vyatka refused to join the army, citing the promise to Ibrahim.

[10] Ivan III subjugated the lands of Perm in 1472, annexed Novgorod in 1478, and installed a pro-Russian khan after capturing Kazan in 1487.

[10] The scarcity of information on Vyatka led Nikolay Kostomarov to remark that "there is nothing in Russian history more obscure than the fortunes of Viatka and its region".

The local leaders, known as voivodes (Russian: земские воеводы, romanized: zemskiye voyevody), were apparently elected and sometimes they are identified with atamans who headed military campaigns and raids.

Grand Duchy of Lithuania and Russian states in 1389 (in Russian)
men in armour in boats, brandishing long swords over unarmed people, and carrying off textiles and other loot from a small settlement on a hill
Ushkuyniks raiding Vyatka in 1382, miniature from the Illustrated Chronicle of Ivan the Terrible (16th century)