Nagahara Yoshiaki
(b. 1939) Nihon Ki-in pro, 6 dan in 1977. He accompanied Hans Pietsch (German go professional) on the fateful go-instruction tour of Guatemala in January 2003, where they were both robbed at gunpoint and Hans Pietsch was murdered.
English Language Go Books
Since several decades he toured Europe for teaching, almost every year. Often during Summers, attending the European Go Congress as well. He also accompagnied Iwamoto Kaoru 9p on visits to the European Go Centre - founded by Iwamoto - in Amstelveen (NL).