If he was a Cook he was in my department which is probably why the name rings a bell, although he would have been working under the SO Catering; there were more than 50 Cooks in MEL in those days, counting those that embarked with the CAG, and about 200 in the Supply department as a whole. And it was nearly 40 years ago!
I can’t seem to find his name in the 25th anniversary book but that doesn’t mean much, they would appear to have only listed about 2/3rds of the ship’s company, and in any case that was a snapshot in time taken about mid year, so he might have posted in afterwards. Do you know what rank he was at the time? I’ve a photo of the Cooks taken on the 1980 IO deployment at home somewhere - I’ll see if I can find it and upload.