One of the first mentions of Buru occurred in the Nagarakretagama -- an Old Javanese eulogy to Hayam Wuruk dating back to 1365 .
Hayam Wuruk is the ruler of the Majapahit Kingdom .
One of the first mentions of Buru occurred in the Nagarakretagama -- an Old Javanese eulogy to Hayam Wuruk , the ruler of the Majapahit Kingdom , dating back to 1365 .