Three were three kings and the names can be mentioned as Chekrayudha in Ayudha dynasty.
Vajrayudha: It is stated that he became the king in 770 A.D. His reference is found in Karpur Manjari of Rajshekhara. Scholars say that Vajrayudha's actual existence is borne out solely by an incidental reference made by Rajasekhara, the dramatist, who flourished at the Pratihara court in the first half of the tenth century A.D
Indrayudha: Vajrayudha was succeeded by Indrayudha in 788 A.D. When he ascended the throne of Kannauj, Pratiharas, Palas and Rashtrakutas were extending their frontiers. The said three dynasties tried to subjugate Indrayudha.
Chakrayudha: Chakrayudha became the king towards the end of eighth century A.D. At the time of his accession he arranged for a grand 'Durbar'. The kings of Kuru, Bhadra, Matasya Yadu, Yatana, Aranti, Gandhara and other provinces attended his court at the time of his accession.
After some time since the accession of Chakrayudha, the, Gurjara-pratihara king Nagabhatta attacked Chakrayudha. Chakrayudha was completely defeated and the rule of Pratiharas was established at Kannauj.