Alhana-deva (IAST: Alhaṇadeva, r. c. 1148–1163 CE) was an Indian king belonging to the Naddula Chahamana dynasty.
He ruled the area around Naddula (present-day Nadol in Rajasthan), as a vassal of the Chaulukya king Kumarapala.
Later, Kumarapala restored his rule in Naddula, as a result of his service in Chaulukya military campaigns.
[5] Naddula was being ruled by Kumarapala's own governor Pratapasimha, as attested by an 1156 CE Nadol inscription.
Historian Dasharatha Sharma theorizes that the Shakambhari Chahamana king Arnoraja invaded and captured Naddula.
Kumarapala defeated Arnoraja, and appointed his own governors at Naddula to ensure that the fort was well-defended.
[10] Historian R. B. Singh theorizes that when Arnoraja invaded the Chaulukya kingdom around 1150 CE, Alhanadeva joined him against Kumarapala.
This theory is based on a legend in the medieval chronicle Prabandha Kosha, which states that the Naddula Chahamana ruler allied with Arnoraja against Kumarapala (although the text wrongly names Arnoraja's contemporary at Naddula as Alhana's successor Kelhanadeva).
[12] The Sundha Hill inscription mentions that the Gurjara king (that is, Kumarapala) sought Alhanadeva's assistance in curbing disturbances in the hilly part of Saurashtra.