The Brahmo Samaj, literally the "Society of Brahma", was founded as a movement by Raja Ram Mohan Roy.
[6][7][8][9][10] While Raja Ram Mohan Roy aimed at reforming the Hindu religion through Unitarianism, his successor Maharshi Debendranath Tagore in 1850 rejected the infallibility of the Vedas.
Tagore tried to retain some Hindu customs, but a series of schisms eventually resulted in the formation of the breakaway Sadharan Brahmo Samaj in 1878.
So, in 1901, a decision of the Privy Council of British India found that "the vast majority of Brahmo religionists are not Hindus and have their own religion".
The traditional seed principles and Debendranath's Brahmo Dharma (or religious and moral law) now stand evolved as the "Fundamental Principles of Brahmoism" and are supplemented by precise evolving rules for adherents, akin to "Articles of Faith" which regulate the Brahmo way of life.