The Avar-Byzantine Wars Of The Late Sixth Century As Depicted By Nikephoros Kallistos Xanthopoulos: A New Source?
At least three fragments places in Nikephoros Kallistos Xanthopoulos ‘ narrative of the Avar wars have no parallels either in Theophylakt Simokatta or in Theophanes. The nature of the evidence cited in these passages cannot be a logical reconstruction based on the texts of either of the mentioned authors. This means that Xanthopoulos, the Church historian of the 14th century, had at his disposal a source on the 6th century which has not come down to us.
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