I want to know the answer to the following question:
When did the denouncing of many nobles take place?
All the background I'm provided with is that "Hundreds of such false nobles were denounced by Hieronim Nekanda Trepka in his Liber generationis plebeanorium (or Liber chamorum) in the first half of the 16th century.". Is that enough to answer the question?
Answer: yes