Basil bar Shumna
11th century Bishop of Kaysun and Edessa / From Wikipedia, the free encyclopedia
Basil bar Shumna[lower-alpha 1] (died 1169/1171) was the Syriac Orthodox metropolitan archbishop of Edessa from 1143 until his death. He wrote a Syriac chronicle covering the years from 1118 until his death, which is now lost but was used as a source by Michael the Great and the anonymous author of the Chronicle of 1234.