I want to know the answer to the following question:
Who wrote in 1818 about the popularity of Chopin?
All the background I'm provided with is that "Julian Ursyn Niemcewicz, in his dramatic eclogue, "Nasze Przebiegi" ("Our Discourses", 1818), attested to "little Chopin's" popularity.". Is that enough to answer the question?
Answer: yes