I found one a week ago or so but I'm in Warren county. I have been in the woods alot in my life and that was the 1st time finding one for me. But I'm like you or was all I cared about were morels but last few years I've been tring to learn other mushrooms. So now that my eyes are open more I find all different types but don't know all there names. I'm sure the lions mane are common around Ohio though. Look into the Ohio Mushroom Society you might find some info there.
http://www.ohiomushroom.org/oms/
http://www.ohiomushroom.org/oms/