pomors were soon followed by tribute collectors from the novgorod republic, and the kola peninsula gradually became a part of the novgorodian lands. a 1265 treaty of yaroslav yaroslavich with novgorod mentions tre volost (), which is later also mentioned in other documents dated as late as 1471. in addition to tre, novgorodian documents of the 13th–15th centuries also mention kolo volost, which bordered tre approximately along the line between kildin island and turiy headland of the turiy peninsula. kolo volost lay to the west of that line, while tre was situated to the east of it.