Arvid Rolfsen is an Avvar from the Stone-Bear Hold in the Frostback Basin.
He first lived much farther North than Frostback Basin, but drifted down to it later in life.
In What Yet Lingers
, this fisherman reluctantly lets the Inquisitor borrow his boat to get to the Lady's Island after they've gained permission from Thane Svarah Sun-Hair
What Yet Lingers