SB 9.23.6
cakruh sva-namna visayan
sad iman pracyakams ca te
khalapano ’ngato jajñe
tasmad divirathas tatah
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
These six sons, headed by Anga, later became kings of six states in the eastern side of India. These states were known according to the names of their respective kings. From Anga came a son named Khalapana, and from Khalapana came Diviratha.