Rincón de Gautier was born on January 9, 1897, in
Ceiba, Puerto Rico. She was the oldest of nine children She was politically influenced by her father, who was from the family of an earlier mayor of Yabucoa. Her mother, teacher Rita Marrero Rivera, died when she was around 11 years old. After her mother died, her father married Mercedes Acha, the mother of her half brother Manuel. Felisa ran the household and raised her younger brothers and sisters. Her father was determined to give Felisa the best education possible. She went to school in
Fajardo,
Humacao and
Santurce, however she did not graduate from high school. Her conservative father removed her from high school during her junior year, intending to prevent any involvement with male students. However, she worked on her sewing skills while caretaking. During the summers, she visited her uncle in San Lorenzo, where she learned how to prepare
medications and became a
pharmacist. An expert seamstress, Felisa set herself the goal of creating employment in Puerto Rico by launching a local clothing factory. In order to master necessary skills, she worked for two years in New York City during the Great Depression, living with relatives, including her sister Josefina. Upon her return to San Juan, she entered the wholesale/retail business and opened Felisa's Style Shop on Calle Fortaleza in Old San Juan. She also managed a flower shop called Miles de Flores. Throughout her lifetime, she remained closely tied to the Roman Catholic Church, as she directed her efforts to raising the standards of living for impoverished Puerto Ricans. ==Women's rights activist==