Premise: Ratnasimha (IAST: Ratna-Siṃha, r. c. 1302-1303 CE) was a ruler of the Medapata (Mewar) kingdom in present-day Rajasthan, India. He belonged to the Rawal branch of the Guhila dynasty, which ruled from the Chitrakuta fort (modern Chittorgarh). The last ruler of this branch, he was defeated by Alauddin Khalji in 1303 CE.
Hypothesis: Ratnasimha ruled in 5th century A.D.