Answer : 4. "Jilani Mata"
Explanation :

1. Jilani Mata is considered to be the folk goddess of Alwar region.

2. Jilani Mata Temple is located in Behror, Alwar.

3. Every year two fairs are organized in the temple premises.

4. The ancient name of Alwar is Salav. It was a part of the Matsya Kingdom, one of the 16 ancient Mahajanapadas.