Slavonic Josephus refers to a set of manuscripts that were once attributed to the ancient historian Flavius Josephus, but have since been mostly discredited. Josephus wrote all of his surviving works after his establishment in Rome (c. 71 AD) under the patronage of the Flavian Emperor Vespasian. As is common with ancient texts, however, there are no surviving extant manuscripts of Josephus' works that can be dated before the 11th century, and the oldest of these are all Greek minuscules, copied by Christian monks. (Jews did not preserve the writings of Josephus because they considered him to be a traitor.) Of the about 120 extant Greek manuscripts of Josephus, 33 predate the 14th century.