A fact I just found in this article (in Bulgarian only): http://www.monitor.bg/article?id=278001
Quote:
При посещението в Москва знаменитият Капабланка дал сеанс в Кремъл. Сред неговите съперници били Климент Ворошилов, Валериан Куйбишев, Николай Криленко. Партиите наблюдавали Михаил Калинин и Григорий Орджоникидзе, но резултатът не е известен.
Unquote

Google translated: "During his visit to Moscow the famous Capablanca has given a session of simultaneous play in the Kremlin. Among his rivals were Kliment Voroshilov, Valerian Kuybishev, Nikolai Krylenko. The games have been observed by Mikhail Kalinin and Grigory Ordzhonikidze, but the results are unknown." 

You see a lot of Soviet games from the 60's and 70's which took place in tournaments called this. I always had the impression (I'm not sure how) that these tournaments were somehow qualifiers for the Soviet Championship, and that the word itself presumably meant 'qualifier' or something similar.

However, on reading Soltis' book on Botvinnik I find that Mr O was a character in 1930's Soviet chess (naturally eventually liquidated). Since it seems unlikely that he was named Mr Qualifier, I suppose I must have been wrong before. But why were all these tournaments called that? There seems to have been a warship called Ordkhonikidze which a British war hero died while attempting to do something underwater to in 1958, but that doesn't help much. Is it just a place after all? Any Russian chess experts know?