is a chronicler, living in Kumersun's walled ghetto with other "suspect" persons such as alchemists. She loves to collect pagan tales and beliefs and has written them into a set of books. Lawrence has come to her to ask for information about Holo's birthplace Yoitsu. Since Dian sounds like a masculine name, she asks Lawrence to call her Diana. According to Holo, Dian is not human, but a bird even bigger than Lawrence. She fell in love with a traveling priest and spent a few years helping him build a church but left because he noticed that she never seemed to grow old and became suspicious.