Abhira
The term Abhira means cow-herd or a Gopa.   Anthropologists came up with the view that Haryana was known by this name because in the post- Mahabharata period here lived the Abhiras, who developed special skills in the art of Agriculture. According to Pran Nath Chopra Haryana got it's name from Abhirayana=Ahirayana=Hirayana=Haryana.