Lúcia de Jesus dos Santos – Sister Mary Lucy of Jesus and of the Immaculate Heart, better known as Sister Lúcia of Fátima – (28 March 1907 – 13 February 2005) was a Roman Catholic Discalced Carmelite

Discalced Carmelites

The Discalced Carmelites, or Barefoot Carmelites, is a Catholic mendicant order with roots in the eremitic tradition of the Desert Fathers and Mothers...

 nun

Nun

A nun is a woman who has taken vows committing her to live a spiritual life. She may be an ascetic who voluntarily chooses to leave mainstream society and live her life in prayer and contemplation in a monastery or convent...

 from Portugal. She was one of three children who claimed to have witnessed a series of apparitions of the Virgin Mary

Our Lady of Fatima

Our Lady of Fátima is a famous title given to the Blessed Virgin Mary as she appeared in apparitions reported by three shepherd children at Fátima in Portugal. These occurred on the 13th day of six consecutive months in 1917, starting on May 13...

 in Fátima, Portugal, in 1917.
Lúcia's maternal grandfather, Joaquim Ferreira Rosa, was a native of Aljustrel

Aljustrel

Aljustrel is a municipality in Portugal with a total area of 458.3 km² and a total population of 9,940 inhabitants.During the Roman era, Aljustrel was known as Metallum Vispascense....

 of the parish of Fátima

Fátima, Portugal

Fátima is a city in Portugal famous for the Marian apparitions, recognized by the Catholic Church, that took place there in 1917. The town itself has a population of 7,756 and is located in the municipality of Ourém, in the Centro Region and Médio Tejo Subregion...

 and born on 29 November 1823.