Abhira
Ghurye, contradicts this by saying Abhira as a tribe is mentioned in the works of Patanjali, dated 150 BC, by most conservative sources, so they definitely haven't entered at the beginning of the Christian era and possibly their presence goes very far into antiquity. Also, proofs of Extra Marital relationships exists within genealogy of Yadus so it is wrong to say Abhira are the source of Dlliance element, and he fails to see the difference between Abhira and the tribe of Krishna.