Dear reena Kulkarni madam, Dr Ambedkar was renamed by his brahmin teacher when he was studing in high school. At that time Dr Ambedkar not even knowing the meaning of cast system and name differentiation. His Teacher was so kind with him that he never tried to make brahmin out of him but tought humanity. Dr Ambedkar as the word know is because of his highest inteligence and not bec of his brahmin name. He was strong human right champion. Please do not get cought with the work and teachings of Dr Ambedkar and his bramhin name. Bote the issues are different. I also suggest you to read his biography easily available at shops, internet etc. Regards.