and Rukam (907). Our current knowledge of the names of kings that reign the Mataram kingdom is much owed to Mantyasih inscription (dated 907), issued by King Balitung (r. 898–910)—that contains genealogy and the reign order of Mataram kings, and he seek ancestor as far as King Sanjaya. This inscription is also known as "Balitung charter". The motivation of Balitung's edict has sparked various assumptions from historians—as if Balitung eagerly seeks legitimacy of his rule, by stating his ancestral lineage. It is highly possible that he was related to the royal family and shared common ancestry. Thus, suggested that he married the daughter of the previous king, which made him the royal son-in-law as well as heir. The Watukura inscription (902) is the oldest inscription in Javanese statecraft that mentioned the position of Rakryan Kanuruhan (Prime Minister), while the position of Rakryan Mapatih—which in Balitung's era is equivalent to crown prince, was held by Mpu Daksa. The relation between Balitung and his successor Daksha is quite problematic, as historians suggested Daksha was the son of previous king (Watuhumalang), while the court was held by Balitung who is probably Dakhsa's brother-in-law. The Telang inscription, dated 11 January 904, revealed the development of the port complex of Paparahuan which was led by Rakai Welar Mpu Sudarsana, located on the bank of Bengawan Solo river. By building port and ferry crossing in navigable Bengawan Solo, might signify the growing interest in maritime trade, thus the court interest has shifted eastward. The Kubu-Kubu inscription (17 October 905) revealed the village Kubu-kubu was awarded to Rakryan Hujung Dyah Mangarak and Rakryan Matuha Dyah Majawuntan in recognition of their valor on conquering Bantan. The toponym of Bantan is unclear, it might correspond to the 10th-century site of Banten Girang in present-day Banten province of western Java, or might be another place. While other historians speculated that Bantan might be an alternative name to Bali. In old Javanese, the term Bantan means sacrifice which is often used interchangeably with Bali that means offering. The Mantyasih inscription (11 April 907) revealed the gifts awarded to five junior Patihs (officials) for their service on maintained peace during Balitung's wedding. Also in 907, in Rukam inscription, Balitung offers that the Sima taxes being collected from the village of Rukam to be allocated for the construction and maintenance of a temple dedicated to his grandmother, Nini Haji Rakryan Sanjiwana. The temple