looks like a cherry tree to me Seems like borers have attacked near the base try to dig them out with a knife and a wire

If the tree holds the fruit, go ahead and eat it. Nothing wrong with that. Copper is copper...its all organic...comes in different forms but its mostly just the concentration of copper that you are worried about. You may have to spray several times. Some of that stuff is expensive. I sprayed early this spring right before the buds broke and I still lost almost every leaf on one of my trees. I think what I was using just wasn't strong enough. Some peaches are more resistant...two of mine have hardly any curl. If you can keep the tree completely dry until the leaves unfold you won't have any (my container peaches are almost curl free having spent many spring rains in the garage/they weren't sprayed at all). I guess this is a real bad year. MSU (Michigan State University) is seeing a lot of curl in orchards.

I see that is rated for zone 5. If you ever want peaches either rip that one out/chainsaw it or graft a hardy variety on to it. Which would include: Reliance, Contender, Madison...among some others. Check out some of the nursery websites and then do some research. A lot of us ATTEMPT to grow these fruits up here in the COLD NORTH, and a lot of failure is to be expected.

If you prune all the small wood off a peach it won't fruit the next yr. But it will fruit the yr after. Sounds like that's what happened here.