if my mother set my son up to be adopted how would I find that info

My mother had me scared to death to raise my son at 21 as a single mother and had informed me that she had set him up to be adopted by a womain a very wealthy family here in Columbus. When he was born I couldn't just hand him over to a stranger. He was part of me and I raised him till he was 17 and was taken from me unjustly in 2019. Fast forward to the winter of 2019 I was dating this guy for quite a few years named Christopher Jenkins. Upon staying the night with him and hiding his keys so he wouldnt wreck his boss, Landy Landrum's Durango he was driving due to him being intoxicated I came upon the registration and the second name on it was Christine Longenberger, the woman I was told my mother had set up to adopt my son.