Like Sophia, Hypatia also maintained a correspondence with a Christian bishop named Synesius of Cyrene, and although she was not a Christian, Hypatia was well respected for her intellect and poise by both Christians and non-Christians. The name "Olivier de Noyen" might be a nod to Chrétien de Troyes. Although Chrétien lived two centuries before Olivier and in another region of France, he is described as having "the peculiar fortune of becoming the best known of the old French poets to students of medieval literature, and of remaining practically unknown to any one else." Marcel Laplace shares a similarity with Maurice Papon in being one of the few civil servants to continue working as such after a successful stint in the Vichy government. Gersonides (Rabbi Levi ben Gershom), the Jewish philosopher who acts as Olivier de Noyen's mentor, is an actual historical figure, well known as both a Jewish religious scholar and as a scientist (the Lunar Rabbi Levi crater is called for him). However, his encounter with Pope Clement VI (also a historical figure) during the Black Death, depicted in the book, is entirely fictional. In fact, it is disputed among historians whether Gersonides was still alive at that time. Gersonides' servant Rebecca, Olivier's beloved, is also completely fictional. References External links 2002 British novels English novels British historical novels Novels set in the 5th century Novels set in the 14th century Novels set during World War II Novels set in Provence Cultural depictions of Hypatia Jonathan Cape books