Eirik is the guy who gets stuff done for the governor of Strand, though for a man with a heavy responsibility he seems to have an awful lot of freedom in his methods. Plenty of warring clans within Strand have tried to take him down, but none have succeeded. Eventually he earned himself the nickname "The Iron Turtle."
Eirik leads the fight against the Skalfing at the Nobleman mead house, in Strand, in Chapter 1. If Ubin treated him respectfully in Strand, he will join Hakon's caravan in the start of Chapter 3. Finally, he might also join Rook's caravan in the end of Chapter 7.