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Artwork associated with St. Louise de MarillacArtwork: Louise_de_Marillac_Le_Gras._Line_engraving_by_Sisco._Wellcome_L0006155.jpg — Louis Hercule Sisco (1778-1861). CC BY 4.0; via Wikimedia Commons. Resized for display.

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Relic associated with St. Louise de Marillac in the Chasing Saints collection
St. Louise de MarillacFrom the Chasing Saints relic collection.View larger photo

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Saint profile

St. Louise de Marillac

1591–1660

Associated with Healing, Mystics, Religious; patronage includes Patron of social workers..

HealingMysticsReligious
Life dates1591–1660
Feast dayMar 15
PatronagePatron of social workers.

Biography and devotion

St. Louise de Marillac: life, patronage, and devotion

St. Louise de Marillac was born in 1591 in France and became a wife, mother, widow, foundress, and one of the great saints of organized charity. She is patron of social workers, widows, the sick, those rejected by religious communities, and those who serve the poor.

Her early life carried emotional wounds and uncertainty, including questions about family background and placement in religious and educational settings. She married Antoine Le Gras and had a son, Michel. Her marriage brought both responsibility and suffering, especially as her husband’s health declined. After his death, Louise’s spiritual life deepened under the guidance of St. Vincent de Paul.

Together, Vincent and Louise transformed Catholic charity in seventeenth-century France. The Confraternities of Charity needed women who could serve the poor in homes, streets, hospitals, and villages. Louise trained, organized, corrected, and encouraged these women until the work became the Daughters of Charity, formally established in 1633 and later approved by the Church.

This was a new kind of religious life. The sisters were not enclosed nuns; their cloister was the street, the hospital, the school, and the room of the poor. Louise formed them in humility, prayer, practical skill, obedience, and tenderness toward Christ in the suffering. Her letters show a woman of discipline, spiritual depth, and maternal concern.

Her body has long been venerated as incorrupt in Paris, a sign often noted in devotional accounts. She died on 15 March 1660, only months before St. Vincent de Paul. St. Louise’s charism was charity made intelligent and durable. She did not merely feel compassion; she organized it, trained it, and gave it a form that could continue serving the poor for centuries.

Her collaboration with St. Vincent de Paul was one of the most fruitful partnerships in Catholic charitable history. Vincent gave spiritual direction and missionary vision; Louise gave formation, administration, and maternal steadiness to the sisters who carried mercy into streets and hospitals.

At a glance

Life dates
1591–1660
Feast day
Mar 15
Patronage
Patron of social workers.
Incorrupt status
Her body is venerated as incorrupt in Paris according to devotional and Vincentian sources.

Relic in the Chasing Saints collection

A relic of St. Louise de Marillac is present in the Chasing Saints Relic Collection. Private registry details, certificate IDs, provenance notes, and storage information are intentionally not shown publicly.

Reported favors

Favors received and prayers answered

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