Perfilyev (Perfilyev), Ilya (?–?)
Perfilyev (Perfilyev), Ilya (?–?) – a Cossack platoon commander, Arctic navigator, and explorer. In the summer of 1633, on two koch ships, he went down the Lena River to its delta. Further, one ship under the command of I. Rebrov moved through the Olenyok anabranch to the west; P. on the second koch via the Bykovskaya anabranch went into the bay of Buor-Khaya and headed east. He sailed around Cape Buor-Khaya, first entered the Yana Bay, and discovered the mouth of the Yana. Going up the river, the Cossacks identified the western part of the Yana-Indigirka Lowland and met Yukagirs (the people which were not known by Russians). In the autumn of 1635, P. reached the headwaters of the Yana (the confluence of its two components) and founded a winter camp (the future city of Verkhoyansk). In 1638, together with I. Rebrov, he moved down to the Laptev Sea and then went to Yakutsk.