> Vikings knew the area around Arkhangelsk as Bjarmaland.

The Scandinavians knew, which doesn't mean Vikings. "Vikings" is a
fetish abused by the Westerners for their self-satisfaction. And
the Scandinavians knew the term from the neighboring Finnic people.

Analogous term in Russian is Perm <https://is.gd/oXB5ug>. The both
Perm and Bjarma came from one old Finnic word that meant "back land"
semantically close to "backyard". The Finns living near the Baltic
Sea called so the region further to the east from them, which was
more sparsely populated with other kinds of Finns. The Scandinavians
and Russians both adapted it from the Finnic use. The meaning is
functionally close to the Slavic "Ukraine".

The association of the Scandinavian Bjarmaland with the present day
Arkhangelsk region is not well-accepted. Some suggest it within
Karelia, Kola peninsula, or elsewhere. Moreover, given the above
meaning, Bjarmaland didn't have to necessarily mean a fixly defined
region, because in various situations the word could be applied to
different areas that were seen as peripheral / marginal from the
perspective of those in Scandinavia who compiled those sagas.

The Russian Perm surely experienced a variety of meanings. While
the Russians gradually learned The Wild North and increased their
presence near the White Sea (and sometimes were fighting with those
Scandinavians (Murmans = Normans) who were also coming there), the
word "Perm" changed its geographical meaning, gradually "moving"
eastward. By the 15th century, the "stabilized" Perm had come to
mean a region along the Urals ridge, 300 - 500 km wide to the west
from the ridge, and (by latitude) to the north from the Bashkir
steppe region and further north close to the Arctic ocean. Today, it
about corresponds to two Russia's federal subjects: Komi Republic in
the north and Perm Oblast in the south.

Watch videos related to the Perm city & area (Vietnamese narration).

<https://youtu.be/-3Ho55Ern_A>
<https://youtu.be/W0-48lOeS6s>
<https://youtu.be/W35d1qx3Kko>

In the 19th century, the Russia's Perm gave rise to the adjective
"Permian" in west-European languages, - to designate a period in the
context of Earth's geological history science, from where it was
also transferred to some other entities, absolutely unrelated to the
initial origin of the word.