Raja Ram Mohan Roy and associates began regular theistic meetings (later known as the Brahmo Sabha) in Calcutta, opening participation beyond orthodox Hindu ritual frameworks and helping spark reformist critiques of idolatry and caste exclusion in Bengal.
The East India Company government prohibited sati in 1829; Roy’s sustained public advocacy and writings were widely recognized as influential in building the case for abolition—an early landmark in Bengal’s reform environment alongside Brahmo initiatives.
A formal Trust Deed was executed to establish and manage the first Brahmo place of worship (later associated with the Adi Brahmo Samaj), institutionalizing the movement’s early commitment to monotheistic worship and non-sectarian access.
The first Brahmo theistic church/house of prayer was consecrated in Calcutta, making the movement’s worship practices publicly visible and providing a durable base for continued religious and social reform activity.
Debendranath Tagore and colleagues adopted a formal covenant and regularized church service, strengthening Brahmo organization and doctrine and helping the movement become a lasting reform institution in Bengal.
The Hindu Widows’ Remarriage Act legalized widow remarriage. While driven prominently by reformers such as Ishwar Chandra Vidyasagar, the broader Bengal reform milieu—where Brahmo critiques of caste and restrictive custom circulated—helped keep such issues in public debate.
A split produced the Brahmo Samaj of India under Keshub Chandra Sen, while the older body became known as the Adi Brahmo Samaj. The new branch became especially active in campaigns for social reform, including opposition to caste discrimination and child marriage.
Inspired in part by Brahmo reform ideas and Keshub Chandra Sen’s visit to western India, the Prarthana Samaj was founded in Bombay, promoting theistic worship and reforms such as opposition to caste barriers, widow remarriage, women’s education, and ending child marriage.
The Special Marriage Act (1872) provided a legal framework used particularly by Brahmos for marriage outside orthodox Hindu personal law, and it set minimum ages for marriage under the Act—an important interface between reform advocacy and colonial legislation.
After controversy surrounding an underage royal marriage linked to Keshub Chandra Sen’s circle, reformers established the Sadharan Brahmo Samaj emphasizing a more democratic constitution and continued social reform engagement (including critiques of caste hierarchy).
The Brahmo Conference Organisation (Sammilan) was created to maintain communication and coordination across Brahmo divisions after the 1878 split, reflecting efforts to sustain reform networks across Bengal and beyond.
The Age of Consent Act (1891) raised the age of consent for girls from 10 to 12 in British India, intensifying debates over child marriage and social reform in which Brahmo and other reformist publics were prominent participants.
Brahmo Samaj and early anti-caste reform in Bengal (1828–1900)
