Narcisa was the daughter of Pedro Martillo Mosquera and Josefina Moran, on October 29, 1832. Her people were farmers, and her parents died when she was still a child. She moved to Guayaquil, Ecuador where for the next 15 years she worked as a seamstress to support her younger siblings, living a single life, helping those even poorer than herself when she could, and spending her time in prayer. In 1868 she moved to Lima, Peru where she worked in a convent of Dominican nuns. She never took vows and remained a lay person her whole life, but spent eight hours a day in prayer, lived as austerely as any sister, and was known to experience ecstasies.
She died on 8 December 1869 at Lima, Peru of natural causes.
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