ORIGINAL: pigiron
Buckmaster, what you have there is a pear tree my friend. I've grown them, sold them, and chopped many up up due to their weak bark and short life span. That close-up of the fruit and the ovalleaf structure is a dead ringer. I've seen many in the semi-wild state with tremendous thorns. Damn things will go right through one of your fingers if your not careful cutting them up.
You need to look into this more closely. Callery pear and bradford pears do not have thorns. I've trimmed and taken down probably hundreds of them over 30 years doing tree work. Believe me, they don't have thorns. They grow them as street trees all over my region. They are weak tree's that growtoo quickly. Like I say, look in to it more and then shoot me a PM.