I suggest you look at these character illustrations towards the middle of the second volume, as they contain spoilers about the characters.
Dumgrith Nirdorth
Nodwealsia Nirdorth(Dwarf Princess)[First Saintess]
Neule Nirdorth(Dwarf Princess)[Second Saintess]
Nerum Nirdorth(Dwarf King)
Newir Nirdorth(Dwarf Quenn)
Linrod(Duke of the Kingdom)
Limen(Duchess of the Kingdom)
Rim Nirdorth(Dwarf Prince)
Rose(?)
Pelloth(Master of Air Tower)
Mery(Master of Water Tower)
Canil(Master of Earth Tower)