Luisa Carvajal y Mendoza was a Spanish religious poet and missionary born in 1566. Coming from an aristocratic background, she eventually renounced her wealth to live a life of poverty and devotion. She is primarily remembered for her efforts to convert people to Catholicism in England, where she lived during a period of intense religious tension. Her missionary work and proselytizing activities led to her being imprisoned twice by English authorities. She died in London in 1614 and is recognized as a blessed in the Catholic Church.