King and king is a book like Prince and Knight in that the Prince has to marry to carry on the throne.  A variety of princesses are paraded in front of him, but he falls for the brother of one, a prince.  They get married and live happily ever after.  I think the reason that this book is not as heard of as Prince and Knight, even though it has been around since 2000, are the illustrations.  The best illustration in the book is the cover.  Some of the pictures are just not appealing.  And it is because of this, that even thought I am against Banning Books, I would not buy this one for my collection.