The popular myth of a treacherous Jaichand was propagated by the ballad Prithviraj Raso (it made other claims that were false, such as a blind Prithviraj Chauhan killing Muhammad Ghori. Actually, Chauhan was captured. Ghori tried to turn him into a vassal. Chauhan rebelled and was killed for treason).

The historical Jayachandra, who ruled what is today's Purvanchal and western Bihar in the period 1170-1194 CE, had nothing to do with Prithviraj Chauhan. Prithviraja Vijaya, a piece of hagiography that is more accurate than Prithviraj Raso, corroborates this. But the more popular ballad says the mothers of Prithviraj and Jaichand were sisters born to the Tomara king of Delhi. That is not true. Chahamana king Someshvara's son Prithviraj's mother was not a Tomar before marriage. Karpuradevi was a Kalachuri princess of Tripuri/Chedi.