plant.id says this is a Prunus Tomentosa, Nanking Cherry.
This is a first year I’ve caught it bloom though I’ve been cutting it back for years. Its sits in the front yard between the weeping cherry and Silver maple. It’s too close to the wall so I will continue to prune it harshly to keep it small.
Its currently looks like its been coppiced with many straight shoots coming up from the ground. I will let it grow a bit more in its current state and see if we get any fruit from these few flowers.