Túathalán is the first cleric associated with a church establishment there, and Túathalán's obituary constitutes the first source for both the existence of a church there and for the existence of the population centre itself.
The church was likely founded around the beginning of the 8th century, probably by Óengus I mac Fergusa, King of the Picts, although King Nechtan mac Der-Ile may also have been responsible.
The latter was a monastic establishment whose writings show a good deal of knowledge about the Picts, and who share a dedication to St. Andrew.
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