Footnote 21: Except some facts in Pachymer and Nicephorus Gregoras,
which will hereafter be used, the Byzantine writers disdain to speak of the
empire of Trebizond, or principality of the Lazi; and among the
latins, it is conspicuous only in the romances of the 14th or 15th
centuries. Yet the indefatigable Duncange has dug out (Fam. Byz. p192.)
two authentic passages in Vincent of Beauvais (l. xxxi. c. 144.), and
the protonotary Ogerius (apud Wading, A.D. 1279, No. 4.).