Tim Tyler writes
K wrote or quoted:

Photos:

http://timtyler.org/temp/murallas_1.jpg
http://timtyler.org/temp/murallas_2.jpg

Could it be a sort of medlar? (Mespilus germanica)
If they're described as looking like blueberries, then I'd assume
they were that size, ie far too small for medlar.
Look like cranberry to me, or something of that family.

They were smaller than most shop-bought blueberries.

Certainly not medlars, then!


--
Kay