I have no idea where any of my three were born.
Sam was a stray and intact when I took him in at (the vet guessed) around four years old.
Mica was with mama cat and her littermates at petsmart when she picked me.
The little sign on her cage said they were found abandoned in a box near a dumpster.
Mala was found in a dumpster at my work.
I have the three most adorable kitties in the world
and it doesn't make a bit of difference whether I ever know or not.