The plague rages among us, or so we are assured by the mass media. My local library has closed after a librarian had a close encounter with someone later found to be infected. There’s no question of visiting a research collection. So … what you are about to do, do it online!
A kind correspondent sent me a couple of articles relating to St Austell. There is a Tenth-century list of Cornish saints’ names in a Vatican manuscript, it turns out. In fact the manuscript is online! But the publication of it is in an obscure journal: the Cambridge Medieval Celtic Studies series, volume 12 (1986). Another correspondent believes that he has access, so it may appear that way.
But the journal turns out to be very obscure indeed. It is abbreviated CMCS, and there is a website here. The journal has now become the Cambrian Medieval Celtic Studies series, and is now based, not in Cambridge, but in Aberystwyth. It’s clearly a fine journal, in an obscure, difficult-to-work-with, area which is not really being supported that well by the academic community.
Thankfully copies of the journal are not expensive, and I have simply ordered issue 12 to be sent to me. Let’s see if anything turns up!
UPDATE: The journal issue turned up almost by return of post, which is very pleasing. I also learn that, while it may be obscure to those of us interested in patristics, it has the largest subscription base of any of the Celtic Studies journals. Oops. It is, at any rate, obviously a first-rate publication.
Please let me know if you have any success. I too am looking for the same article. I do see an addendum here : https://muse.jhu.edu/article/473513/pdf. The usual sources amazon, abebooks etc have every volume but this one!