One of the most prominent Zamindar families within the Chainpur Estate were the families of Babu Gajadhar Prasad Narayan Singh and Babu Surya Deo Narayan Singh, who were cousins. (Early Nineteenth Century, some 200 years ago) Their ancestor shared common property and Zamindari rights at Chainpur and other villages across erstwhile SARAN District of Bihar.
Normally, in the zamindari system in Bihar and also across British India, a system of primogeniture was followed (where the eldest son inherited the major part of the estate or Raj and the other siblings were left with little in comparison). However, Chainpur or most of the Eksaria Clans did not follow the system of primogeniture or estate impartibility. A truly democratic setup where all siblings had equal share to the property. Same was the case with the Zamindari. As such, the Zamindari never could get transformed as a "RAJ".
Babu Gajadhar Prasad Narayan Singh, (mentioned above), married the grand daughter of Zamindar of Maksudpur - Raja Todar Narayan Singh (2nd Raja of Maksudpur) and a prominent land holder of Gaya District. When Raja Todar Narayan Singh died without a male heir, his daughter - Rukmini Kuer became the Rani (1853-1857) and she adopted Babu Gajadhar Prasad Narayan and her only daughter's - minor son - Rameshwar Prasad Narayan Singh.
Thus, a Chainpur Babu became a RAJA.
Rameshwar Prasad Narayan Singh was given the gaddi sometime in 1857 but his maternal grandmother - Rani Rukmini Kuer acted as Regent (1857-59) and subsequently his father - Babu Gjadhar Prasad Narayan Singh became Regent (1859-69) and Rameshwar Prasad Narayan Singh was crowned RAJA in 1891.
After his death in 1902 and lack of male heirs, his younger brother Chandreshwar Prasad Narayan Singh was crowned RAJA of MAKSUDPUR. He brought his share of Chainpur Estate property into MAKSUDPUR RAJ. He died in 1941 and as per his will the Maksudpur Raj passed onto the family goddess, Bhagwatiji.
Both RAJA Rameshwar Prasad Narayan Singh and RAJA Chandreshwar Prasad Narayan Singh had only daughters and none of their maternal grandsons retained property at Chainpur or other villages of SARAN. Their focus shifted to MAKSUDPUR RAJ.
