Kumara Gupta

His successors—Kumara Gupta, Skanda Gupta, and others—saw the gradual demise of the empire with the invasion of the Hunas (a branch of the Hephthalites). By the mid-6th century, when the dynasty apparently came to an end, the kingdom had dwindled to a small size.

…Chandra Gupta’s son and successor, Kumara Gupta (reigned c. 415–455). The threat was that of a group known in Indian sources as the Hunas, or Huns, though it is not clear whether this group had any relations to the Huns of European history. They were in any event a branch…