SB 9.16.30
putram krtva sunahsepham
devaratam ca bhargavam
ajigartam sutan aha
jyestha esa prakalpyatam
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Visvamitra accepted the son of Ajigarta known as Sunahsepha, who was born in the Bhrgu dynasty and was also known as Devarata, as one of his own sons. Visvamitra ordered his other sons to accept Sunahsepha as their eldest brother.