Unless Manson took out a copyright on his story anyone can write about his life. The L.A. prosecuter that convicted Manson and his chums wrote a bestseller based on the arrest, trial, and sentencing of the notorius killers. Vincent Bugliosi had the trial transcripts which are open to the public, and his own first-hand account of the proceedings. Legally you can write about your own experiences.
The copyright for the Peanuts characters, including Charlie Brown, is now held by the family of Charles Schultz.
Nobody owns the copyright of a single word. Perhaps you mean trademark.
The copyright to "the Snake" is held by Penguin Press who (as Viking Press) entered into an exclusive publishing agreement with the author in 1938.
the coca cola company owns the copyright
No, there are unofficial parodies but no official rewrites since she still owns all the copyright and therefore there cannot be a rewrite until her copyright expires.
A minor owns the copyright on any works they create.
Universal.
The copyright for "You're a Good Man, Charlie Brown" is owned by the estate of Charles M. Schulz, the creator of the Peanuts comic strip, which the musical is based on. This includes the music and lyrics created for the stage production by Clark Gesner.
Rankin/Bass.
Rondor Music.
Word Music.
Paramount.