In any case this was an old, big oak. My grand kids came over and we placed push pins into the exposed trunk to mark their birth years, young. The pins representing the parents' ages were mid-way on the trunk where the kids are pointing. And finally the old man. Egads! closer to the center. We didn't count all the rings, but I estimate the tree was about 90 to 100 years old- and no, I'm not THAT old.
Incidentally, the common name of this tree is called "Willow oak". Where is that forestry Professor? I will have to get back to you to give you the scientific name.