The inscriptions Anjuk Ladang, note that Mpu Sindok, the Mataram Hindu king who is called Sri Sri Maharaja Rakai Isyana Wikrama Dharmottunggadewa ordered Rakai Hinu Sahasra, Rakai Kanuruhan and Rakai Baliswara in the year 937 to build a sacred building called Srijayamerta as a sign of the determination area Anjuk Ladang (now called Nganjuk) as an autonomous area caused by the good services from Anjuk Ladang citizen during the battle.