In 1917, Sinha returned to England to work as an Assistant for Secretary of State, Edwin Samuel Montagu. Later, he also worked as a member of the Imperial War Cabinet and Conference along with the Maharaja of Bikaner, Ganga Singh following the outbreak of the First World War, and represented India in Europe's Peace Conference in 1919. In the same year, he was made Parliamentary Under-Secretary of State for India and also raised to the peerage as Baron Sinha of Raipur in the Presidency of Bengal. He became the first Indian member of the British House of Lords, taking his seat in February 1919. He was instrumental in passing of Government of India Act, 1919 through the House of Lords. He returned to India in 1920 and was appointed as the first governor of the Province of Bihar and Orissa. His term as Governor did not last long and he served on this position for 11 months on grounds of bad health. In 1926, Sinha went back to England and joined the Judicial Committee of the Privy Council in London but bad health forced him to return to India. Indian National Congress Sinha was a member of the Indian National Congress from 1896 to 1919 - rising to become its president in 1915 at the Bombay session. He left Congress in 1919 along with other moderate members. At the Calcutta session of the Congress in 1896 - he brought a proposal that no ruler of any Indian State should be deposed without an open judicial trial. Shantiniketan Shantiniketan was originally a part of the ancestral zamindari of the Sinha family of Raipur, Birbhum. Satyendra Prasad Sinha donated for the construction of Sinha Sadan with a clock tower and bell. It was in this building that Oxford University conferred its honorary doctorate on the poet, Rabindranath Tagore. Death Sinha died on 4 March 1928 at Berhampore. Personal life He was married to Gobinda Mohini Mitra on 15 May 1880 at Mahata, Burdwan, Bengal. They had four sons and three daughters. Styles 1863–1886: Satyendra Prasad Sinha 1886–1915: Satyendra Prasad Sinha, KC 1915-10 February 1919: Sir Satyendra Prasad Sinha, KC 10–19 February 1919: The Right Honourable Sir Satyendra Prasad Sinha, PC, KC 19 February 1919 – 1920: The Right Honourable The Lord Sinha, PC, KC 1920-1921: His Excellency The Right Honourable The Lord Sinha, PC, KC 1921–1928: The Right Honourable The Lord Sinha,