Keshab Chandra Sen was a prominent leader of the Brahmo Samaj. He founded the Tabernacle of New Dispensation (Naba Bidhan) in 1878, which aimed to synthesize various religious traditions. He was also instrumental in establishing the Indian Reform Association in 1870, which worked on social issues like women's education and temperance. While he was influenced by Unitarianism, the Calcutta Unitarian Committee was primarily associated with Ram Mohan Roy.