He is first heard of around 1682 collecting Yasak on the Aldan River and one of the Uda Rivers. |
The Russians here had heard reports of a 'Kamchatka River' to the south and were already collecting yasak on the headwaters of the rivers that flow south toward Kamchatka. |
In 1590 Kuchum raided the Tatars around Tobolsk who were paying yasak to the Russians. |