Ellen Hayes
Ellen Amanda Hayes was an American mathematician and astronomer. She was a controversial character for not only being a female professor, but also embracing many radical causes.
Hayes was born in Granville, Ohio the first of six children to Charles Coleman and Ruth Rebecca Hayes. At the age of seven she studied at the Centerville school, a oneroom ungraded public school, and at sixteen taught at a country school to earn money. In 1872 she entered the preparatory department at Oberlin College and was admitted as a freshman in 1875, where her main studies were mathematics and science.
Source: Wikipedia