Answer:
Elisabetta Dami is an Italian children's book author with over twenty years of experience in the publishing Industry. She ghostwrites the popular series Geronimo Stilton. She is part owner in the Italian Publishing firm Piemme, which recently was acquired by Mondadori. She regularly attends the Bologna Book Fair, and is currently traveling (Kilimanjaro, Sahara Desert, Sedona, Nepal, etc...), and gathering ideas for new Geronimo Stilton Adventures.
The creative conceit of the Stilton books requires that Geronimo Stilton be the author; this creates problems for schoolchildren who report on the books that they read; they are required to list an author. It seems ridiculous to submit a fictional character as an author, but the books themselves only list Stilton. We have clever marketing with an unfortunate consequence for book-report-writing children.
Thus, for parents like me, I suggest you have your child list Dami as the author.