I myself have some trouble keeping the secondary characters straight in Seirei no Moribito, so I have translated the character map from the official site. SnM is a great show, and I want to understand it as well as I can. Click to enlarge.
Apologies for the small size and soft type. The original is small, and Photoshop isn't the best for adding clear type. But I find the map useful, and I hope someone else may, too.