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pranad vedasira munih
kavis ca bhargavo yasya
bhagavan usana sutah
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
From Mrkanda, Markandeya Muni was born, and from Prana, the sage Vedasira, whose son was Usana [Sukracarya], also known as Kavi. Thus Kavi also belonged to the descendants of the Bhrgu dynasty.