Accoding to ramayana,the ancient name of kanyakubj was mahodaya. the king of mahodaya was kushnabh.he had hundred daughter.his daughter was so beautiful.one day they were walking in their park,then vayudev saw that girls.and he attracted on that girls.and vayudev put a proposal to marraige infront of that girls.but daughter of kushnabh denied it.then vayudev became angry and he gone in the body of that girls.and kubj(kubn) rises on the backbone of kushnabh`sdaughters.then from that time mahodaya is called kanyao ka kubj(kanyakubj).kushnabh was the chandravanshi kshatriya and he was the ruler of kanyakubj desh.Later after the death of kushnabh,His son raja gadhi ruled on the kanyakubj desh.Brahmins of kanyakubj desh is called Kanyakubj Brahmins.For  the identification of brahmins of kanyakubj desh,our ancesetor announced that brahmins of kanyakubj will be call kanyakubj brahmins..all kanyakubj brahman was belong to kanyakubj desh.kanyakubj desh was spread to the border of vidisa. Kanyakubj brahmins have thick population between ayodhya and agra. kanyakubj brahmins mean brahmins of kannauj region.kanyakubj brahmins controlled vast empire of terrotary after declination of mauryas.big lanlords ayodhya naresh,raja sisedani,maharaja of old kanpur , Many big lanlords in western bihar etc.. are belong to kanyakubj brahmins,according to ayodhya abhilekh, the ruler of ayodhya was raja dhandev,who was belong to the family of pushyamitra shung.pushyamitra shung was a great king of patliputra and the time of pushyamitra shung kanyakubj brahmins spread all over india.because his kul was acharya,achraya is the synonyms word of upadhyay,pushyamitra shung also done ashwamedh yajna,in vaidic era,ashwamedh yajna was done by upadhyayas of kanyakubj.and he was belong to vidisha.kanyakubj brahmins also have a population in vidisha .I visited bihar and i found this surname upadhyay is only use by the kanyakubj brahmins.and kanyakubj brahmins have thick population near the patna(danapur region,bhojpur,buxar,rohtas,kaimur,dehri aanson,sasaram).and they came here from ayodhya region and kannauj region including madhya pradesh and chhatishgarh.some writer says that pushyamitra shung was belong to ujjain and his gotra was kasyap,but malviya brahmin has no population in bihar and jharkhand.and these writer give this statement according to kalidas.kalidas was a respected person in the court of vikramaditya and he was not born on the time of pushyamitra shung.maharshi panini was belong to time of shung vansh and he said that his gotra was bhardwaj and he was the guru of maharsi patanjali(purohit of pushyamitra shung).after conclusion i found that shung vansh was kanyakubj brahmins of bhardwaj gotra.according to kashi prasad jaisawal he was belong to vidisha,vidisha also has good population of kanyakubj brahmins.some people consider that kanyakubj brahmins and saryuparin brahmins both are same.kanyakubj brahmins are differ from saryuparin brahmins.saryuparin brahmins have connection with gonda,gorakhpur and bahraich and saryupain brahmins have no connection with kannauj.kanyakubj brahmins are belong to middle india and saryuparin brahmins are belong to eastern u.p.

region of kanyakubj brahmins are region between ayodhya and agra in uttar pradesh,madhyapradesh,chhatishgarh,and region of bhojpuri language of bihar and jharkhand,westindies,mauritius,surinam,singapoor etc..