In the Pararaton chronicle, in which the term for this war is found, events are labelled by adding the prefix pa- to one or more keywords.
The Majapahit kingdom was established in 1293 by Raden Wijaya with the help of the cunning and able Arya Wiraraja, the Regent of Madura.
As a reward for Wiraraja's help, in 1295, Raden Wijaya agreed to give him the eastern portions of East Java, which includes Blambangan areas with Lumajang as its capital.
[2] Throughout Raden Wijaya's reign, Arya Wiraraja ruled the eastern realm peacefully as Majapahit's vassal, yet enjoyed substantial freedom.
According to Pararaton, in 1376 appeared "a new mountain", which hinted at the emergence of a new keraton (court, palace, or center of power) opposed to the central authority of Majapahit.
His name simply means Bhre (Duke) of Wirabhumi, a province of Majapahit that corresponds with the Blambangan area in the "eastern hook" of Java.
In the eastern court, after the death of Wijayarajasa in 1398, he was succeeded by his foster son that also his granddaughter's husband, Bhre Wirabhumi.
The contest for the Bhre Lasem title has created an animosity between eastern and western courts, until 1400 when both Nagarawardhani and Kusumawardhani died.
According to Pararaton, in 1402 Bhre Wirabhumi and Wikramawardhana were involved in a bitter quarrel, and afterward, they shunned each other and refused to talk.
Finally, in 1406 the Western troops led by Bhre Tumapel, son of Wikramawardhana, penetrated the eastern palace.
He was chased down and killed by Raden Gajah, also known as Bhra Narapati, titled Ratu Angabhaya of the Western court.
In the end, the emperor Yong Le pardoned the fine out of pity for the Javanese king.
During the reign of Suhita, the killer of Bhre Wirabhumi, Raden Gajah, was punished by death sentence in 1433.
As a reward, Damarwulan would be wed to Queen Kencanawungu and become the king of Majapahit, stylized as Prabu Mertawijaya.