Elena Guerra was born into a wealthy, aristocratic family in Lucca on 23 June 1835 as one of six children to Antonio Guerra and Faustina Franceschi.
In her childhood she was known to be talented but timid in nature.
Guerra made her Confirmation on 5 June 1843.

Guerra worked with the Vincentians, caring for the poor and the sick.
Cholera struck Lucca in 1853 and she tended to the ill after her parents granted her permission to do so.
Guerra studied French as well as music and art but also learnt Latin and the lives and works of the Church Fathers during an illness that spanned from 1857 to 1864 as she could not leave the house because of it.
In 1866 she established a lay association dedicated to the education of girls, which she decided would be the sole focus of her life.
It was called the Order of Saint Zita in honor of the patron saint of Lucca whom she admired.
One of her students was Gemma Galgani.

Guerra travelled to Rome in 1870 to attend a session of the First Vatican Council that Pope Pius IX had convened.
Guerra and her father made an Easter pilgrimage there in April 1870 and visited the tomb of Saint Peter before she was able to meet with the pope on 23 June 1870.
In 1885 she wrote Pope Leo XIII and asked him to rekindle in the faithful devotion to the Holy Spirit.
Leo XIII responded with an apostolic letter (Provida matris caritate).
Encouraged, Guerra wrote thirteen letters to Leo between 1895 and 1903.
Leo issued the encyclical Divinum illud munus (subtitled "On the Holy Spirit") in 1897, in which he established the Novena to the Holy Spirit to be said between Ascension Thursday and Pentecost.
He followed this in 1902, with a letter to the bishops, Ad fovendum in Christiano populo.

Leo XIII granted her a private audience on 18 October 1897 in which he encouraged her work and renamed the order.
It was at some stage that she corresponded with Arnold Janssen regarding a "militia of the Holy Spirit" that would be dedicated to working against the Freemasons.
In August 1906 the Archbishop of Lucca told her that he would not permit her prospective religious from vesting or taking their vows unless she resigned as the order's Superior General.
Guerra resigned her position after reflection more so in light of internal friction with some nuns questioning the manner in which she was leading the congregation.
Her order received papal approval from Pope Pius X on 6 March 1911.
John Bosco once referred to Guerra as a "golden pen" in reference to her spiritual writings.

Guerra died on 11 April 1914 (on Holy Saturday) and is buried in Lucca at the church of Sant'Agostino.
Her order continues its work with houses in nations such as Iran and the Philippines amongst others; in 2008 there were 232 members of her order in 36 houses across the globe.
Elena Guerra was born into a wealthy, aristocratic family in Lucca on 23 June 1835 as one of six children to Antonio Guerra and Faustina Franceschi. In her childhood she was known to be talented but timid in nature. Guerra made her Confirmation on 5 June 1843.
Guerra worked with the Vincentians, caring for the poor and the sick. Cholera struck Lucca in 1853 and she tended to the ill after her parents granted her permission to do so. Guerra studied French as well as music and art but also learnt Latin and the lives and works of the Church Fathers during an illness that spanned from 1857 to 1864 as she could not leave the house because of it. In 1866 she established a lay association dedicated to the education of girls, which she decided would be the sole focus of her life. It was called the Order of Saint Zita in honor of the patron saint of Lucca whom she admired. One of her students was Gemma Galgani.
Guerra travelled to Rome in 1870 to attend a session of the First Vatican Council that Pope Pius IX had convened. Guerra and her father made an Easter pilgrimage there in April 1870 and visited the tomb of Saint Peter before she was able to meet with the pope on 23 June 1870. In 1885 she wrote Pope Leo XIII and asked him to rekindle in the faithful devotion to the Holy Spirit. Leo XIII responded with an apostolic letter (Provida matris caritate). Encouraged, Guerra wrote thirteen letters to Leo between 1895 and 1903. Leo issued the encyclical Divinum illud munus (subtitled "On the Holy Spirit") in 1897, in which he established the Novena to the Holy Spirit to be said between Ascension Thursday and Pentecost. He followed this in 1902, with a letter to the bishops, Ad fovendum in Christiano populo.
Leo XIII granted her a private audience on 18 October 1897 in which he encouraged her work and renamed the order. It was at some stage that she corresponded with Arnold Janssen regarding a "militia of the Holy Spirit" that would be dedicated to working against the Freemasons. In August 1906 the Archbishop of Lucca told her that he would not permit her prospective religious from vesting or taking their vows unless she resigned as the order's Superior General. Guerra resigned her position after reflection more so in light of internal friction with some nuns questioning the manner in which she was leading the congregation. Her order received papal approval from Pope Pius X on 6 March 1911. John Bosco once referred to Guerra as a "golden pen" in reference to her spiritual writings.
Guerra died on 11 April 1914 (on Holy Saturday) and is buried in Lucca at the church of Sant'Agostino. Her order continues its work with houses in nations such as Iran and the Philippines amongst others; in 2008 there were 232 members of her order in 36 houses across the globe.
Elena Guerra