Conversation so far:
What are hagiographies and its connection to Namdev?
A hagiography is a biography of a saint or an ecclesiastical leader. Namdev is the subject of many miracle-filled hagiographies.
Was Namdev's hagiographies reliability in question?
The Namdev biographies in medieval manuscripts are inconsistent and contradictory, feeding questions of their reliability.
Did Namdev have a large following?
Was Namdev able to make a positive change?

Question: When did produce his works?
Self-contained rewrite: When did Namdev produce his works?