There has been a little bit of furor in some circles in Japan, regarding the status of Yasuke, who was a favorite of Oda Nobunaga, whether he was a samurai or not. Around September of 2015, a user by the name tottoritom made numerous edits to the Yasuke article, citing to yet-to-be-published papers by Thomas Lockley. Coincidentally, tottoritom's user page introduces himself as Thomas Lockley too, and Lockley happened to also have lived in Tottori. After some time, the citations were changed to refer to a book that Lockley published in Japan (in Japanese). (Now, if the two are indeed one and same person, he has broken a Wikipedia rule on not publishing original research.)

The book become a basis for a romanticized novel he published for western audiences, which I believe inspired the production of Netflix animation for the same character. From then on, the view that Yasuke was a samurai gained foothold, which caught some Japanese historians off-guard.

He's also had his hand on the Britannica article of the same title, and now Wikipedia cites the Britannica article too, thus completing the cycle.