Tarfos is the new mayor of Stalwart in The White March - Part II.
He can be found near the East gate of Stalwart Village once you've started the White March Part II story-line.
The stout dwarf used to run the mines, but when Renengild stepped down as mayor she asked him to run for office and he agreed. However, he seems to be a little overwhelmed with the job, especially with the delegation from Stalwart seeking to appraise Stalwart's potential and the grounds for any further investment.
Risk Tolerance.: When you first talk to him, he asks you to negotiate with trade representative Nesta on behalf of him and the village, because his own negotiation skills are lacking.