The document survived in the sixteenth-century copy made by the Spanish Renaissance historian Jerónimo Zurita y Castro, whose papers are now kept in the Colección Salazar y Castro in the Real Academia de la Historia in Madrid. Zurita made the copy during his stay in the monastery of San Victorian de Asan from the texts he had seen in the archives and which did not survive to our times. This document is one of the four recently published by by Guillermo Tomás-Faci and José Carlos Martin-Iglesias (three are known from Zurita's transcripts, one from the 13th-century copy). Despite the late date of the textual witnesses, the scholars provided convincing arguments for the authenticity of the documents and their sixth-century origin: their transmission is similar to that of the donation and testament of Bishop Vincent of Huesca which are considered authentic, there is no good reason for which the monastery would have wanted to falsify exactly those documents in the later centuries (like the territorial claims), there are elements which would be very difficult for a medieval falsifier to know (e.g one of the documents uses the term Osocerdensis, of Osicerda, the locality south to Saragossa, which was well known in Antiquity but almost completely forgotten in the Middle Ages, document 3 is signed by Bishops Fronimus and Sedatus, known to be bishops of Agde and Beziers in the time of the document`s composition (from Gregory of Tours and the councils of Toledo), while usually the falsifiers were clumsy in reconstructing such details, also the form of the documents is consistent with what we known about the Visigothic diplomas and document-making (from the Formulae Visigothicae from the times of Sisebut, Lex Theudis, Vincent of Huesca's donation and testament), finally, Latinity of the text is consistent with the sixth-century dating.

 

According to the medieval monastic tradition, the monastery was founded by King Gesalic (507-511) in honor of Martin of Tours. That Martin was in fact venerated as the patron of the community is confirmed by two other documents from San Victorian (see ...). Victorianus who is the first known abbot and whose name eventually stuck to the monastery ruled between 522 and 557 (Kampers 1979: 61-62).