High Quality Content by WIKIPEDIA articles! Darbhanga Raj, also known as Raj Darbhanga and the Royal Family of Darbhanga, were a family of Zamindars and rulers of territories that are now part of Mithila and Darbhanga district, Bihar, India. Their seat was at the city of Darbhanga. The estate of Darbhanga Raj was estimated to cover an area of 2,410 square miles (6,200 km2), incorporating 4,495 villages within 18 circles in Bihar and Bengal and employing over 7,500 officers to manage the estate. It was the largest zamindari in India and was the best managed estate at the time of abolition of Zamindari. The Raj Darbhanga trace their origin to Mahesh Thakur at the beginning of the sixteenth century.