Ahir clans
The Ahir clans are the various subsets of the Ahir a community of India. According to the researches (till 1914) made by Shrotriya Pandit Chotelal Sharma of Phulera, Rajasthan - Ahir clan had 1768 or more variants (gotra) & subsets in it.
According to the Markandeya Purana, all the Haiheya aggressors (warrior caste) were killed in a massacre led by Parshuram. In that time, the Ahirs were either a sub-clan of the Hayheya or sided with the Hayheya.
Ahir clans of North India
Yaduvanshi
The Yaduvanshi Ahir, also spelled Jadubansis, Jadubans, Yadavanshi, Yadavamshi) claim descent from the ancient Yadava tribe of Krishna.
According to history professor Rahul Shukla, In western UP, the early Yadavs were Yaduvanshi Yadavs who traced their lineage to Lord Krishna. They dominated the plains from Punjab, present-day Haryana to western UP, up to the Yamuna.The Yadavs of the western districts, especially Etawah, Mainpuri, Firozabad, Kannauj etc. are socially more influential traders, business-owners, and later went into government and private service in a big way. They were the Zamidaars and they also ruled in many parts of India. Rewadi (Hariyana) Dhaulpur Alwar (Rajsthan) Bharaul,Kurri kupa ( Firozabad U P ) were some of the riyasats of Ahir (Yadavas) .