Orphamiel is named in the Kyprianos Database record for M4, also identified as Moen 34/607.
The catalogue describes a pottery ostracon bearing a short address to the angel Orphamiel. Its text occupies three lines in one column on the front of the object. The language is listed as nonstandard Sahidic Coptic, and the catalogue dates it to 801–1100 CE.
This profile follows the database’s description of that particular object.
Kyprianos M4, catalogue record.