My guest is Dominic Bliss, whose biography of the legendary Hungarian coach Ernö Egri Erbstein led not only to the refounding of an historic Budapest football club, but also a new tournament in his name.
The second edition will be held in South-West London over the weekend of 23-24 July and features Corinthian-Casuals, Budapesti Atletikai Klub, the world's oldest club Sheffield FC, and Fall River Marksmen of the USA.
It's going to be fascinating...