Hayashi Genbi (林元美, Genbi Monnyu, 1778 - 1861) was a Japanese 8-dan professional go player, although his promotion to 8-dan was somewhat controversial. Originally a Honinbo house pupil, he became the eleventh head of the Hayashi house (1819-1848); and was the author of the famous problem collections Gokyo Shumyo and Gokyo Seimyo, the posthumous three-volume series Rankado Kiwa, and many others.
He has been suspected of falsely claiming that some of Huang Longshi's games were ancient games involving Japanese players. However, it's difficult to say whether his intentions were done purposely or in ignorance.
 From New in Go, 'Forgery recalls link to Korea's first world go champion' .