technically no, it was Mia and Previns daughter, Mia went through a collecting children phase.She herself married Sinatra with a similar age difference between
woody and Soon-yi, except theyre still married. I find it odd that other than his daughter with Mia, there have been no other allegations. And those allegations arose during the divorce, with other children denying this happened. Neither son (Ronan) nor Woody are sure Sinatra isn’t Ronans father. This is all Hollyweird...but I’m not at all convinced of the abuse story.
Well that is why I put “adopted” in quotes.
As for whether anything else is true, no opinion. The marriage to a vulnerable girl/woman he was in a father role for was enough for me.