In Kit Berry's Stonewylde series, the inhabitants of the Dorset village of Stonewylde live a secluded life, segregated from the Outside World and happy in their own little world. They have a pagan and extremely traditional culture, and as far as I can remember, they're always addressed by their first names only (Yul, Maisie, Tom, Violet, and so on). I don't recall any mention of surnames.
Does anyone in Stonewylde have or use a surname?
I'd expect the Hallfolk at least to have surnames, since they tend to have a stronger connection to the Outside World. Many Hallfolk kids end up going to university, where they presumably need to supply a full name; and many Hallfolk adults, including Magus, have a job or some kind of presence in the Outside World, in some cases even migrating out and living there.
And if the Villagers don't have surnames, then what does Yul do when he
studies at university
between books 3 and 4? Again, presumably he needed to supply a full name in order to do so.
Is there ever any information on this in the books?