Thomas A. Carlson (ed.), "Sīyādōr" in last modified January 14, 2014, http://syriaca.org/place/1737 Sīyādōr http://syriaca.org/place/1737 David Wilmshurst The Ecclesiastical Organisation of the Church of the East, 1318-1913 291, 292 Upper Ṭiyārī district Hakkārī region