They are suppose to be zone 5+ here are my trees Ayers pear! . There are some similarities. In zone 6 they ripen in August. This is one of my ayers trees
When I zoom in on your pear I see ayers
This is your leaf
I really need to see the blooms this spring to positively identify it.
Here is my tree zoomed in you see what I mean
Perfect characteristics of ayers leaves and fruits.
In addition your pears bunch up just like ayers if some blooms have those characteristics red streaks I would say you have a match.
See your pear bunches just like ayers and many pears don’t. See below
Was the fruit dripping with excessive juice I suspect your answer will be yes?