Satyendra Prasanna Sinha, 1st Baron Sinha, KCSI, PC, KC, was a prominent British Indian lawyer and statesman. He was the first Governor of Bihar and Orissa, first Indian Advocate-General of Bengal, first Indian to become a member of the Viceroy's Executive Council and the first Indian to become a member of the British ministry. He is sometimes also referred as Satyendra Prasanno Sinha or Satyendra Prasad Sinha.

Bengali Kayastha is a Bengali Hindu caste originated from the Bengal region of Indian subcontinent, and is one of the main subgroups of the Kayastha community. The historical caste occupation of Kayasthas throughout India has been that of scribes, administrators, ministers and record-keepers; the Kayasthas in Bengal, along with Brahmins and Baidyas, are regarded among the three traditional higher castes that comprise the "upper layer of Hindu society." During the British Raj, the Bhadraloks of Bengal were drawn primarily, but not exclusively, from these three castes, who continue to maintain a collective hegemony in West Bengal.