I always thought people like DS and Beate Uhse were the kinda "secrets" of the adult biz (OK Beate was well known from her Euro retail operation - but not much other than that). Both stuck there heads out to push the "adult biz" ahead over decades.
Just reading the wikipedia.org stuff - it's like an era looking back
Notice they mention Mary (Millington) re DS. She was a nice girl (despite the rep) - always remembered my birthday and Christmas stuff
Her life terminated with a suicide - why, we will never know.