 His own contention, embodying a theory of Christian Gottlob Wilke ("Der Urevangelist", 1838), was that the original narrative was the Gospel of Mark.For Bauer, the Gospel of Mark was completed in the reign (117–138) of Hadrian (where its prototype, the 'Ur-Marcus,' identifiable within the Gospel of Mark by a critical analysis, was begun around the time of Josephus and the Roman–Jewish Wars).Bauer, like other advocates of this 'Marcan Hypothesis', affirmed that all the other Gospel narratives used the Gospel of Mark as their model within their writing communities.