(Νεῖλος Καβασίλας), archbishop of Thessalonica, lived according to some about A. D. 1314, and according to others somewhat later, about 1340, in the reign of the emperor Joannes Cantacuzenus. He was a bitter opponent of the doctrines of the Latin Church, whence he is severely censured by modern writers of that church, whereas Greek and even Protestant writers speak of him in terms of high praise.
[L.S]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890