Everything told about him comes from Javanese babad and hagiographic literature composed two to four centuries after the period it describes, mostly at the courts of Surakarta and Yogyakarta. No dated inscription, no sixteenth-century Portuguese or Malay report, and no archival document has been securely connected to him. The result is not a disagreement between scholars but an absence: no defended set of dates exists to disagree about.
What would resolve this A dated epigraphic find at Kadilangu or at the Demak mosque naming him would give the cycle a fixed point. So would an early European or Malay archival mention independent of the babad tradition. Failing either, a systematic codicological dating of the earliest babad manuscripts would at least establish when the figure took his present shape, which is a smaller but answerable question.
OpenJavanese philology and codicology; Islamic epigraphy of Java; early modern archival history of the Indonesian archipelagoSumarsam, Gamelan: Cultural Interaction and Musical Development in Central Java