'Pakubuwono IX' (also transliterated 'Pakubuwana IX') was the ninth
Susuhunan (ruler of
Surakarta) .
Reference
Miksic, John (general ed.), et al. (2006) ''Karaton Surakarta. A look into the court of Surakarta Hadiningrat, central Java'' (First published: 'By the will of His Serene Highness Paku Buwono XII'. Surakarta: Yayasan Pawiyatan Kabudayan Karaton Surakarta, 2004) Marshall Cavendish Editions Singapore ISBN 981-261-226-2