The false claim is said to have originated from a book published by Polish writer Julian Ursyn Niemcewicz in 1858. In 1912, Teodor Jeske-Choiński, another Polish writer, reportedly promoted the false claim in the form of an imaginary quote: "If you do not allow us to establish a 'Judeo-Polonia state' and a nation of 'Judeo-Polish people,' we will strangle you."
Bulska, Dominika; Haska, Agnieszka; Winiewski, Mikołaj; Bilewicz, Michał (2020). "From Judeo-Polonia to Act 447: How and why did the Jewish conspiracy myth become a central issue in Polish political discourse?". Conspiracy Theories in Eastern Europe: Tropes and Trends. Routledge. ISBN978-0-429-32607-3. Retrieved October 16, 2024. [...] Currently, according to census data, there are approximately 10,000 Jews living in Poland. At the same time, antisemitic attitudes, especially the belief in a Jewish conspiracy, are widespread among Polish society. What are the sources of such attitudes? [...] What are the psychological functions of it? [...]