You got the full spectrum.
My family did not find out the full story about the “secret” until both of them had died—it was a secret from us as well.
It was in publicly recorded land records—hidden in plain sight—so there was no way he could hide it from beyond the grave.
He was so certain she would never have a reason to look at those...
On a completely unrelate note, my sister in law (at 58 years old) found out her older brother was not her full brother, but a half brother. Ancestry.com. These secrets will be discovered at some point.