 The commission would have been made in 1431 to celebrate the marriage of Charles of Anjou, Count of Maine, to a daughter of Alain IX of Rohan, however that marriage never took place.Other scholars suggest that Yolande of Aragon commissioned this book of hours for her daughter, which is unlikely, because the Latin prayers have masculine endings.As with many northern European artists of this period, the identity of the Rohan Master is shrouded in mystery.