Vigrahraj-IV, also known as Visaldev, was a prominent Chauhan ruler of the 12th century. During his reign, he expanded the Chauhan dominion and patronized arts and literature. He is credited with transforming the city of 'Javalipura' into a significant administrative and cultural center, which eventually became known as 'Javalapura'. The other rulers listed were either earlier or later, and this specific transformation is attributed to Vigrahraj-IV.