You have travelled through the regions mentioned by Lheu Brenin's prisoner, and have learned much about the state of things in Dunland.
'It is time you returned to Lheu Brenin with what you have learned of Dunland, ${PLAYER}. But I ask you to keep this in mind: there are Dunlendings and there are Dunlendings. This Falcon-clan may oppose Saruman, and for that I am thankful, but they still bear no love for my people.
'Do not mistake them for friends in anything but necessity.'
You should help Théodred's men deal with the mysteries of the Gravenwood before returning to Lheu Brenin with what you have learned in Dunland.