The story of Nangeli may never have been known, but for a chance discovery.
Four years ago, artist Murali T was flipping through an in-house magazine of a local bank, when he stumbled on a small report about Nangeli, written by a native from her area, Cherthala.
Intrigued by the story, he made his way to the small sleepy town.
"I spent a lot of time with the local people of Cherthala and even found the locality where Nangeli is believed to have lived over 100 years ago.
"It was called Mulachhipuram or the land of the woman with breasts, named to remember Nangeli's great sacrifice against the breast-tax," he told the BBC.
It is a village tale that is not officially recognised in any of India's historical accounts.
But the story of Nangeli is much loved by her local villagers - and now Murali T hopes to document it and have it recognised as part of Kerala's history by the government.
Reinforcing caste structure
The "breast-tax" had been imposed by the king of the erstwhile State of Travancore, one of the 550 princely States that existed in British ruled India.
Women from lower castes were not allowed to cover their breasts, and were taxed heavily if they did so.
"The purpose of the breast-tax was to maintain the caste structure," said Dr Sheeba KM, an associate Professor of gender ecology and Dalit studies at the Shri Shankaracharya Sanskrit Vishwavidyalaya in Kerala.
Social customs on clothing were tailored to a person's caste status, which meant that they could be identified merely by the way they dressed.
Nangeli belonged to the Ezhava caste. Her community was required to pay the tax along with other lower castes like the Thia, Nadar and Dalit communities.
But, villagers say, she decided to protest by covering her chest without paying the breast-tax - a brave move in the early 1900s for a woman of lower caste status.
Our auto rickshaw driver Mohanan Narayan takes us to the neighbourhood where Nangeli lived.