If any descendents of Shakespeare were to surface and be able to prove their connection, they would have no claim whatsoever to ownership of any rights over Shakespeare's plays. They are in the public domain, and were written before any copyright law existed.
But various publishers may have rights over the use of their printed versions of Shakespeare's material. Study versions, or editions with special illustrations can't simply be freely shared just because authorship rights no longer exist.
Italian copyright last for 70 years after death of the author, which in this case was in 1936.
Yes; they will be protected through 2026.
The 1952 movie is protected by copyright, and will likely be protected through 2047.
Yes; it will be protected for 70 years after the death of the composer, who is still quite alive.
There are a number of works by this title; with the exception of the 1922 Lon Cheney movie, the themes for all are still protected by copyright.
Copyright on Satie's Gymnopedies has expired, but recordings are almost certainly still protected, and new significantly edited and/or annotated editions may have been separately registered.
Yes; it is controlled by EMI Feist, and will be protected through 2034.
Photoplay magazine may still be under copyright protection, as the magazine likely contains original photographs, articles, and other content that are protected by copyright law. It is best to check the copyright status of specific issues of Photoplay magazine to determine if they are still protected.
If it is still protected by copyright, yes. Even if you don't intend to sell it, you still need "print rights."
No; it is in the public domain.
Yes. As corporate works, they will be protected for 95 years from publication.
Both the song and all recordings of it are still protected.
Although it was superseded by the Copyright Act of 1976, it still applies to works that were protected prior to 1978 (when the 1976 Act went into effect).