A ghostwriter is an author who writes under someone else's name, with their consent. A ghostwriten book is thus somewhat deceptive- the author on the cover is not the actual writer.
Ghostwriters are often employed by celebrities to write autobiographies in situations in which the celebrities themselves may not be talented authors.
...
received priest's orders in 1413 and was made
subprior 1429.
The house was disturbed for a time
in consequence of the pope's rejection of the
bishop-elect ...