ঈশ্বরচন্দ্র বন্দ্যোপাধ্যায়
Ishwar Chandra Vidyasagar (26 September 1820 – 29 July 1891)

His quest for knowledge was so intense that he used to study under a street light as it was not possible for him to afford a gas lamp at home. He cleared all the examinations with excellence and in quick succession. He was rewarded with a number of scholarships for his academic performance. To support himself and the family, Ishwar Chandra also took a part-time job of teaching at Jorashanko. Ishwar Chandra joined the Sanskrit College, Calcutta and studied there for twelve long years and passed out of the college in 1841 qualifying in Sanskrit Grammar, Literature, Dialectics [Alankara Shastra
], Vedanta, Smruti and Astronomy. As was the custom then Ishwar Chandra married at the age of fourteen. His wife was Dinamani Devi. Narayan Chandra Bandyopadhyaya was their only son.
In the year 1839, Ishwar Chandra Vidyasagar successfully cleared his law examination. In 1841, at the age of twenty one years, Ishwar Chandra joined Fort William College as head of the Sanskrit department.
After five years, in 1846, Vidyasagar left Fort William College and joined the Sanskrit College as 'Assistant Secretary'. In the first year of service, Ishwar Chandra recommended a number of changes to the existing education system. This report resulted in a serious altercation between Ishwar Chandra and College Secretary Rasomoy Dutta. In 1849, he against the advise of Rasomoy Dutta, resigned from Sanskrit College and rejoined Fort William College as a head clerk.
Vidyasagar established Barisha High School in Kolkata in 1856.

With support from people like Akshay Kumar Dutta, Vidyasagar introduced the practice of widow remarriages to mainstream Hindu society. The prevailing custom of Kulin Brahminpolygamy allowed elderly men — sometimes on their deathbeds — to marry teenage or prepubescent girls, supposedly to spare their parents the shame of having an unmarried girl attain puberty in their house. After such marriages, these girls would usually be left behind in their parental homes, where they might be subjected to orthodox rituals, especially if they were subsequently widowed. These included a semi-starvation, hard domestic labour, and close restriction on their freedom to leave the house or be seen by strangers.
Unable to tolerate the ill treatment, many of these girls would run away and turn to prostitution to support themselves. Ironically, the economic prosperity and lavish lifestyles of the city made it possible for many of them to have successful careers once they stepped out of the sanction of society and into the demi-monde. In 1853 it was estimated that Calcutta had a population of 12,718 prostitutes and public women. Many widows had to shave their heads and don white saris, supposedly to discourage attention from men. They led a deplorable life, something Vidyasagar thought was unfair and sought to change.