[nothrabannosir]

In 2002 a Dutch newspaper discovered newcomer Marek van der Jagt to be Arnon Grunberg, a famous Dutch writer. They sent some blind samples of various writers to a research centre in Italy, who matched the two.

https://www.nrc.nl/nieuws/2002/05/11/grunberg-is-van-der-jag... (2002)