Of these most illustrious Martyrs of the city of Edessa in Syria, Guria and Shamuna contested during the reign of Diocletian, in 288; after many tortures, they were cast into prison, then beheaded.

Shepherd of Edessa, most-auspicious Chief Sacrificer, and the luminous pride, of the entire Church, let us the faithful honor Kallinikos, the guide of clergy and laity, on whose behalf he ceaselessly ...

The history of the cloth was documented by a 12th ... as there are references to its presence in Jerusalem as early as 570AD.