dharasena iv succeeded dhruvasena ii and reigned from c. 641 to 650 ce. he had subdued gurjaras of lata (south gujarat) as he has issued copperplate grants from bharuch. he had assumed the imperial titles of "paramabhattaraka mahrajadhiraja parameshvara chakravartin". he had made grants to buddhist viharas and brahmanas. he was a patron of scholars and the master archer. probably during his reign, the bhatti, the author of "bhattikavya" or "ravanavadha", flourished. it is a grammatical poem.