I am John's cousin. I knew your grandmother, Marilyn (Mick) Klenk. She was my favorite aunt. She was my mother's sister. My mother was Carol Barbara McFarland. I have a fairly extensive family tree on Ancestry and a lot more info on paper that I got from your grandmother. I do not know who your real biological family is. Have you tried to chat with your Aunt Judy Ogden or Lisa Walston? They might have the information you seek. Aunt Mick lived with Lisa at the time of her death so she might have the adoption papers. She was also adopted. If I can be of any help, please let me know.
Warmly,
Sharon Skees Lesner