Susuhunan or in short version Sunan, is a title used by the kings of Mataram and then by the hereditary rulers of Surakarta, Indonesia. The rulers of Surakarta traditionally adopt the reign name Pakubuwono (also spelled Pakubuwana). Susuhunan is specific to the rulers of Surakarta; the rulers of Yogyakarta, who are also descended from the Mataram dynasty have the title Sultan.
Note: There were two rival claimants to the throne, Hangabehi and Tedjowulan, both are sons of late Pakubuwono XII. [1]
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