Narsimhavarman I was a powerful Pallava king who strengthened the empire. During his reign:
- He defeated the Chalukyan ruler Pulkesin II in 642 CE and conquered Vatapi, taking the title "Vatapikonda".
- The Chalukyan ruler Srivallabha later defeated Narsimhavarman I and occupied Kanchi temporarily.
- Narsimhavarman I was successful in expanding the Pallava kingdom, but also faced defeats by powerful Chalukyan rulers. He made major contributions to Temple architecture in South India and administration.