Date: 90s or older.
Country of origin: Don't know, maybe France, seen it on Hungarian television.
It's about a young boy who is taken from his mother because authorities deem her unfit to raise him, because I think she stole a piece of clothing from a store.
The boy is raised by adoptive parents, he studies very diligently and becomes a lawyer.
As a young lawyer he is assigned to defend her own mother in some criminal case, he recognises her, but she doesn't recognise him.
It could be that the title of the movie has something to do with the boy's name.
It's not Madame X (1966) or Madame X (1981).