Glabas, Isidore

   Metropolitan of Thessalonike (qq.v.) from 1380-1396. He left the city during its siege (1383-1387) by the Ottomans (q.v.), but he returned in 1393 when it was under Ottoman control. His sermons and letters are an important source of information about the siege, and especially about what it was like under Ottoman administration, which lasted until 1403. In one of his sermons there is mention for the first time of the Ottoman devshirme, the forcible recruitment of Christian boys for service in the sultan's elite shock troops, the famed janissaries (q.v.).