Rao Sonag was a Rajput king belonging to the Rathore clan, and the first Rao of Idar.
His father was Rao Sheoji and his mother hailed from the Chavda clan of Rajputs.
Sonag was a brother of Rao Asthan, ruler of Khed.
The two brothers together conquered the town of Idar and Sonag settled there.
This biography of a member of an Indian royal house is a stub.