Miller Theo was a retainer of Horan Faust, the Silver Eagle Duke.
More precisely, he was the son of the Minister of Finance of the Silver Eagle Duchy, and he himself hadn't been given any actual post yet. In fact, he had just had his coming-of-age ceremony a couple of days ago, and still hadn't been granted the title of a knight.
Miller liked to travel and explore around the continent to experience the colorful culture and rich history that it had to offer, but because of his position as a noble, most of his travels were within the borders of the Valla Empire. Other than that, he was a rare believer of the God of Travel and Arts, Grimund.
This deity would bless his believers so that they would have safer travels, and have greater creative inspiration. True believers of this deity would also be able to easily get food or accommodation from strangers through their arts, may it be singing or even telling stories.