There is no Eyvind in Viking mythology, Eyvindr Finnsson skáldaspillir is however a skald who wrote of Viking mythology.
The cognomen skáldaspillir means literally "spoiler of poets" and is sometimes translated as "plagiarist", though it might also mean that he was better than any other poet.
A skald was a poet. In 'Skaldskarpamal' it tells the Viking mythology surrounding the development of poetry and explains many of their kennings for poetry.
In Norse mythology, frost giants were called Jotuns, who lived in Jotunheim. The giants were the chief enemies of the Gods.
The Viking Sagas was created in 1995.
A Viking horde is a group of raiding Vikings. A Viking hoard is a treasure that was hidden.
The viking god of thunder was Thor.
Some call it the Norse Religion, Viking Mythology, and the Viking Religion, but the most correct is Norse Mythology.
Eyvind Alnæs was born in 1872.
Eyvind Alnæs died in 1932.
Eyvind Bødtker died in 1932.
Eyvind Bødtker was born in 1867.
Eyvind Getz died in 1956.
Eyvind Getz was born in 1888.
Eyvind Kang was born in 1971.
Eyvind Mehle was born in 1895.
Eyvind Mehle died in 1945.
Valhalla
No; Thor is Norse-Viking.