Alchon Huns replaces Kidarites
The Alchon Huns, (Bactrian: αλχον(ν)ο Alchon(n)o) also known as the Alchono, Alxon, Alkhon, Alkhan, Alakhana, and Walxon, were a nomadic people who established states in Central Asia and South Asia during the 4th and 6th centuries CE. They were first mentioned as being located in Paropamisus, and later expanded south-east, into the Punjab and Central India, as far as Eran and Kausambi. The Alchon invasion of the Indian subcontinent eradicated the Kidarite Huns who had preceded them by about a century, and contributed to the fall of the Gupta Empire, in a sense bringing an end to Classical India.The invasion of India by the Huna peoples follows invasions of the subcontinent in the preceding centuries by the Yavana (Indo-Greeks), the Saka (Indo-Scythians), the Palava (Indo-Parthians), and the Kushana (Yuezhi). The Alchon Empire was the third of four major Huna states established in Central and South Asia. The Alchon were preceded by the Kidarites and succeeded by the Hephthalites in Bactria and the Nezak Huns in the Hindu Kush. The names of the Alchon kings are known from their extensive coinage, Buddhist accounts, and a number of commemorative inscriptions throughout the Indian subcontinent.
The Alchons have long been considered as a part or a sub-division of the Hephthalites, or as their eastern branch, but now tend to be considered as a separate entity.