A Matter of Myrmidons | Act I Dragon's Dogma Guide
Last update: 11 May 2016
Just after entering Gran Soren (and completing the Off With its Head quest), you'll be stopped by Mason. He'll suggest that you should learn more about Pawns.
Ask the innkeep for advice and go to the Pawn Guild. You'll get there by taking the road north from the market.
There, talk to Barnaby.