Gadwal Samsthanam was a vassal of the Nizam of Hyderabad. It was once part of Raichur district (though it is now Gadwal in Mahabubnagar_district). It was one of the three important samsthanams, the other two being Wanaparthy Samsthanam and Jatprole Samsthanam. The Samsthanam has a fort called as Gadwal Fort or Nalla somanadri fort.
Ll It was once ruled by a feudal lord, Somashekar Ananda Reddy, fondly called somanadrihails from poodoor village. Gadwal has developed around a fort built by the Gadwal ruler Somanadri. This Gadwal Samsthanam was protected by Mallichetti vamshiyulu. The Nagi Reddy we fondly know Nagappa was an Ayngarashakulu of Gadwal samsthanam (Raja somanadri was a minor). He died in a war with fanatic sultans. Then Narsappa succeeded his father Nagappa as Gadwal Samsthanam Ayngarashakulu, but unfortunately for some reason he had to leave the palace.