Consider the following information related to a social reformer:

1. Born into the Mali caste

2. Worked extensively for the education of women and marginalized communities

3. Famous for his publication Gulamgiri (Slavery), which critiqued social inequalities

4. Founder of the Satyashodhak Samaj, an organization aimed at social justice and empowerment

Identify the social reformer using the information provided above.