Waldemar Rosenberger, (, Vladimir Karlovich Rozenberger, 1848–1918) from Saint Petersburg, Russia, became director of the International Volapük Academy in 1892. Under his leadership, the Academy began to experiment more with the Volapük language. In 1902 the Academy proposed a heavily revised version which was known as Neutral and later Idiom Neutral. Constructed language creators Academics from Saint Petersburg Volapük 1848 births 1918 deaths