REALLY Raja ram mohan Roy started a campaign for the abolition of ‘Sati System’ in which wife of the dead burned herself in the funeral pyre of her husband. He also condemned polygamy, denounced casteism,advocated the right of Hindu widows to remarry etc. With his active persuasion Lord William Bentick,the then Governor General of British India passed the famous Regulation XVII in1829 that situated Sati as illegal and punishable by courts. Please give credit where it is due. William was in the official position to abolish. Dont want to further digress from the original post here.