NIGHTBRINGER | The Arthurian Encyclopedia

Fjallsharfir


giant slain by Yvain in the Norse Ivens Saga.

He appears in Chrétien’s Yvain as Harpin of the Mountain.

“Fjallsharfir” seems to mean “Maountain-Harfir” or “Harfir of the Mountain”.


Source
Ivens Saga | 13th century