Josef and Katharina Moser owned a general store in Burgenland at Parndorf which was the eastern end of Austria as remapped in 1919.

For the Moser family this meant, initially, some months spent under house arrest while their property was "aryanized" (expropriated by the state).

After the war Jonny Moser studied History at the University of Vienna, later completing his doctoral dissertation on the subject of "Anti-Semitism in Austria".

He was on the board of the "Social Democratic Freedom Fighters" ("Sozialdemokratischen FreiheitskämpferInnen"), the Urania (an adult continuing education institution) and of the Association "Victims of Fascism and Active Anti-Fascists" ("Opfer des Faschismus und aktiver AntifaschistInnen").

In 2011 he received the honour of a "Bundesehren" award from the Austrian state, shared four ways with other freedom activists Gertrude Spieß, Hugo Pepper and Peter Weidner.