You need to get emerine first.To save your time,you need to take five emerines back.
Then you will unlock conversation with Dulrig（twice） and Ruben（once）.
More details from "update 0.33"
- In need of emerine (While entering the armory. Req: Like 10, bringing him 5 emerines, all entrance to the munbury unlocked) – Repeatable every 4 days. More option with high northcrest defender attitude and discount with Dulrig done.
