According to the following soures, Maxim the Greek was in fact an Albanian.

In “Johnson’s Universal Cyclopaedia A Scientific and Popular Treasury of Useful Knowledge” Volume 6, on page 564, we can read the following:

“The Raskolniks of Russia are the mem bers of the Raskól or schism the name being from raskolot to cleave The schism dates from the year 1666 During the long period of the Mon gol yoke numerous errors crept into the ritual and litur gical books of the Russian Church In the early part the sixteenth century an attempt to correct them was by Maxim the Greek an Albanian monk from Athos who was invited to Moscow in 1518 by the Vassily Ivanovich but it proved fruitless In the seven teenth century however during the reign of Alexis Mik”.¹

Travels in Greece and Albania, Volume 1 by Thomas Smart Hughes , published 1830, page 445:

“The following generation offers another but much more feeble manifestation of the same rationalistic tendencies founded this time on a purely Christian basis This move ment is generally connected with the literary activity of a remarkable man Maxim the Greek an Albanian scholar who succeeded in grafting upon the country of his adop tion some elements of the vigorous European culture of his day”²

Reference

1. https://www.google.se/books/edition/Johnson_s_Universal_Cyclopaedia/kgZJAQAAMAAJ?hl=sv&gbpv=1&dq=Albanian+monk+Holy+Synod+banned&pg=PA564&printsec=frontcover ↩︎
2. https://www.google.se/books/edition/The_Russian_Peasantry/WIwNAAAAYAAJ?hl=sv&gbpv=1&dq=Maxim+The+Greek+Albanian&pg=PA305&printsec=frontcover ↩︎