Shahabad district, headquartered at Arrah  was a bhojpuri speaking districts in western Bihar, India making western border of Bihar with Uttar Pradesh. The district was subsequently bifurcated into 4 districts including Bhojpur, Rohtas, Kaimur and Buxar districts. These districts are often considered to be part of Purvanchal along with Saran and Champaran regions from Bihar. Babu Kunwar Singh belonged to this district.