From the Manual of the Game:
Thordal enjoys an excellent reputation among the people of his northern homeland, but the settlers from the south are also well-disposed toward him, although they normally reach for their weapons at the first sight of a Narlindir. This is due above all to Thordal's character - he is earthly, but sincere and direct.
Passive skill: Settlers have a greater chance of meeting a future spouse at a festival.
Active skill: Thordal can entertain settlers near him with his singing.