Krishna Vallabh Sahay alias K B Sahay was born on 31 December 1898 in a lower middle-class Kayastha family in the village of Sheikhpura near Fatuha in Patna district. His father, Munshi Ganga Prasad, was an Inspector during the British era and he was appointed in many small and big police stations in Hazaribagh and Chotanagpur. The upbringing of the child K B Sahay was spent in these police stations, seeing the poor helpless Indians being beaten unnecessarily. The levy of taxes and the suffering of the poor by the landlords was seen by him in his childhood itself. Krishna Vallabh Sahay had taken up the revolt against the Britishers because of the way atrocities were done on the Indians. He was kept under the strict discipline of his mother. Again in 1919 from the prestigious St. Columbus College of Hazaribagh, he got the gold medal for getting first class first in English subject, which he received from the then Bihar Governor Mr. Gait. In 1921, Krishna Ballabh Sahay also jumped into the Non-cooperation Movement against the British Government and together with Babu Ram Narayan Singh in the then Chotanagpur area (Chatra, Hazaribagh, Koderma, Giridih, Ramgarh, Bokaro area). By roaming in the villages, he started the work of awakening the common people against the British government. The general public was impressed by his speech and the British government, considering him their enemy, put him in jail for the first time in 1928. Again in 1928, he was elected a member of the Bihar Legislative Council under Swarajya rule, but again in 1930, he was imprisoned by the British for participating in the Civil Disobedience movement. Between 1930 and 1934, he had to go to jail four times, and during this time he had a close relationship with Shri Krishna Singh (Shri Babu) which stayed with him forever. When Shri Babu became the Chief Minister of Bihar, he made K.B. Sahay the Revenue Minister. In the meantime, Krishna Ballabh Sahay took the initiative of the abolition of the zamindari system and gave it a concrete shape. Between 1946-57, the result of his protest against the Zamindari system was that Raja Kamakhya Narayan Singh opposed him and K B Sahay was defeated in the 1957 elections. But he was given the title of Iron Man of Bihar. K B Sahay will always be remembered as a strict administrator, efficient politician, and disciplined and punctual leader. On 29 May 1974, Sahay died suddenly in a road accident near Sindur village of Hazaribagh while returning from Patna to Hazaribagh after being elected as a member of the Bihar Legislative Assembly.