I think a picture would really help someone to identify it and then you can decide what to do with it. Rangy shrubs with white bell like blooms include Lyonia and Vaccinium of several types.

Could it possibly be a Serviceberry tree? They are a small tree that seems to like to grow on the edge of a woodland, and have dangling infloresences in springtime. If they were repeatedly cut back, they probably would appear to be shrublike.

In the summertime they develop dark, almost black, edible berries the size of a wild blueberry. The birds love them--I have also found them to be tasty but usually leave them for the birds.

I forgot you said it was suckering. How about Leucothoe or Agarista?

Pieris floribunda and Leucothea are both evergreen. If it's only a foor or so high it could be low-bush blueberry. It definitely sounds like a Vaccinium, maybe Farkl;eberry if it's a couple feet tall.

Yes yes! I thought the leaves looked like blueberry, but never thought of the little lanterns as harbingers of berries-to-come. With your help, I now think they are wild messy blueberry bushes.

I have no further questions about what to do with these treasures, as they are clearly happy in the environment and will give the birds lots of reasons to visit. Thanks!