After some further consideration, I'm getting more convinced that they are black locust.
Evidence:
--Everyone here calls them "Robinia" (italy/italian).
--Wikipedia says they are pretty widespread in italy and my region in particular.
--I don't think there are the red bark needles that typify honey locusts.
--Wikipedia says the honey locust is present here, but mainly as an ornamental, and is called "Lo spino di Giuda" (Judas Needle).
So...how about we graft a couple and see what happens? My neighbor has an apricot, a plum, and an
apple tree. Pretty sure I can get some cuttings.
In other news, I saw a wild apple tree where I work. It puts out wild apples. I could either graft from that or try to grow the tree from a small branch. I've Already taken an apple from it for the seed.