First as a student. Then with the manuscript movement around 1843. He also was involved around 1851, which led to a falling out. Then in 1862 or 63 he later gave Anthimos as a reference.
www.purebibleforum.com
This can use more context
Since even the supposedly "real" character Simonides - rightly - had doubts about his accurate biographical information early on, he adds three official credentials towards the end of the introduction and in the footnotes to counteract the already widespread distrust of his person ,
appealing to the authority of the issuing officials: a) Anthimos, Archbishop of Constantinople, b) the Greek Consul General of Southern Russia in Odessa Xenophon Pappadatos, c) Colonel Tzami Karatassos and other Macedonian officers. Of course, the enclosed letters contribute nothing to the proof of the originality of the manuscript; they are only intended to prove the credibility of the publisher. Whether the letters are genuine or fake is unimportant here; they are nevertheless probable - and that is exactly what is important here, to convince the reader of the authenticity of the subsequent presentation of the High School on Symi.10
10 Whether these letters actually existed was not researched as part of this study; however, they are similar to official letters of credence. In any case, the persons mentioned and their offices are not invented.
======
appealing to the authority of the issuing officials:
a) Anthimos, Archbishop of Constantinople,
b) the Greek Consul General of Southern Russia in Odessa Xenophon Pappadatos,
c) Colonel Tzami Karatassos and other Macedonian officers