Feral wild hardy peach

My Grandpa lived in North east Nebraska and had a few native feral peach trees.  He called them "snow peaches"   they are small and fuzzy and hardy.   He would dig suckers and gift them to people.  He had one at his farmstead from the 1940s and the planted a sucker in his backyard when he moved to town in his retirement.   I always wanted to bring that tree to west central Wisconsin where I live.  After many years of digging suckers,  failed grafts, I finally have sprouted 4 seeds.

wanted to know if anyone else have seen these wild feral hardy peaches.

Josh