In 1829 the Ottoman government granted legal recognition to the Armenian Catholic Church , and in 1845 the Syriac Catholic Church was also granted its own civil emancipation . Meanwhile , the residence of the Patriarch was shifted to Aleppo in 1831 . However , after the Massacre of Aleppo in 1850 , the Patriarchal See was shifted to Mardin in 1854
Massacre of Aleppo in 1850
Massacre of Aleppo (1850)
Syriac Catholic Church