He is the son of Samudragupta the Great and attaines his reign by an aggressive expansionist policy.
Samudragupta is presumed to have conquered the region, as in his Allahabad inscription, it has been mentioned that, he had conquered Mahêndra of Kôsala, Vyâghraraja of Mahâkantâra, Mantarâja of Kêrala, Mahêndra of Pishtapura, Svâmidatta of Kottûra on the hill, Damana of Êrandapalla, Vishnugôpa of Kâñchi, Nîlarâija of Avamukta, Hastivarman of Vengî, Ugrasêna of Palakka, Kubêra of Dêvarâshtra, Dhanamjaya of Kusthalapura, and others.
Narasimhavarman I is claimed to be one of the nine Indian kings who never lost on the battlefield to their enemies, the others being Ajatashatru, Chandragupta Maurya, Karikala Chola, cheran senguttuvan of the Sangam age, Samudragupta, Rajaraja Chola I, his great warrior son Rajendra Chola and Rana Kumbha of Mewar.
He was the third ruler of the Gupta Dynasty, who ushered in the Golden Age of India.
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Samudragupta, ruler of the Gupta Empire (c. 335 – c. 375 CE), and successor to Chandragupta I, is considered to be one of the greatest military geniuses in Indian history.
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He ruled for about ten years in the north-central India with son as an apprentice Pataliputra, near modern day Patna in Bihar state of India.
In the Mahabharata and Ramayana it was known as Kantara or Mahakantara which later on finds mention in the historical record of Allahabad pillaring scription of Samudragupta.