Thomas of Edessa on the Nativity of the Lord, 2010.
Thomae Edesseni Tractatus de Nativitate Domini nostri Christi, 1898.
Encyclopedia of Syrian literature (online) 16 November 2017 (Thomas of Edessa lived in the early 6th century. His death is mentioned as recent in 544 A.D. Two of his works, and one or more hymns, have survived.) http://roger-pearse.com/wiki/index.php?titleThomas_of_Edessa