Thomas A. Carlson (ed.), "Mar Ishaʿya" in last modified December 9, 2016, http://syriaca.org/place/1997
    
        
            
                
                    Mar Ishaʿya
                    Mār Ishaʿyā
                    Mar Ishaya
                    Mar Isha‘ya
                    Mār Ishayā
                    Mār Isha‘yā
                    
                    
                        Mer
                        Gwerkel district
                        Gāzartā region
                    
          
                    http://syriaca.org/place/1997
                    
                        David Wilmshurst
                        The Ecclesiastical Organisation of the Church of the East, 1318-1913
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