So I asked my father to look at it, and he said it was a cottonwood tree as well. So I just left it.
Couldn't get any apple?
Unfortunately, most of the Orchard was cut down and already processed into firewood before I got there, or even knew what was going on. My grandma kept some trees though and she graciously allowed me to cut off a branch of one apple tree, and take out a cherry shoot that was growing next to her ancient cherry tree.
Here's the apple tree. I took the longer branch to the right and on the bottom.
Here's the cherry shoot I was able to get