Jeanne Marie Rendu was born on September 9, 1786 at Confort, a district of Gex in the Jura Mountains. She was the eldest of four girls. Her parents, simple living mountain people and small property owners, enjoyed a certain affluence and true respect throughout the area. Jeanne Marie was baptized the day she was born in the parish church of Lancrans. Her godfather by proxy was Jacques Emery, a family friend and future Superior General of the Sulpicians in Paris.
Jeanne Marie Rendu was three years old when the Revolution broke out in France. From 1790 it was compulsory for the clergy to take an oath of support for the civil Constitution. Numerous priests, faithful to the Church, refused to take this oath. They were chased from their parishes; some were put to death and others had to hide to escape their pursuers.
The Rendu family home became a refuge for these priests. The Bishop of Annecy found asylum under the assumed name of Pierre. Jeanne Marie was fascinated by this hired hand who was treated better than the others. One night, she discovered that he was celebrating Mass. She was offended that she had not been told the truth.
Later, in a discussion with her mother, she blurted out: “Be careful or I will tell that Pierre is not really Pierre.” In order to avoid any indiscretion on the part of her daughter, Madame Rendu told her the truth of the situation.
It was in this atmosphere of solid faith, always exposed to the dangers of denunciation, that Jeanne Marie was educated. She would make her First Holy Communion one night by candlelight in the basement of her home. This exceptional environment forged her character.
The death of her father, on May 12, 1796, and that of her youngest sister, at four months of age, on July 19 of the same year, shook the entire family. Jeanne Marie, aware of her responsibility as the eldest, helped her mother, especially in caring for her younger sisters.
In the days following the Terror, people calmed down little by little and life resumed its normality. Madame Rendu, concerned about the education of her eldest daughter, sent her to the Ursuline Sisters in Gex. Jeanne Marie stayed two years in this boarding school. During her walks in town, she discovered the hospital where the Daughters of Charity cared for the sick. She had only one desire, to go and join them. Her mother gave her consent that Jeanne Marie, in spite of her young age, might spend some time at this hospital. God's call, which she had sensed for many years, made itself clear: she would become a Daughter of Charity.
In 1802, Armande Jacquinot, from the village of Lancrans, confided to her friend that she was preparing to leave for Paris to enter the Company of the Daughters of Charity of St. Vincent de Paul. Jeanne Marie leaped at the opportunity and begged her mother to allow her to leave. Having consulted with Fr. de Varicourt, the senior priest at Gex, Madame Rendu, happy, but very emotional at her daughter's vocation, consented to her request.
On 25 May 1802, Jeanne Marie arrived at the Motherhouse of the Daughters of Charity, rue du Vieux Colombier in Paris. She was nearly 17 years old! The reopening of the Seminary (novitiate) took place in December 1800. On their arrival, the travelers were welcomed by 50 young women in formation.
Jeanne Marie was very anxious to give her very best in this new life. Her health was weakened by the sustained mental effort this demanded and by a lack of physical exercise. On the advice of her physician and that of her godfather, Fr. Emery, Jeanne Marie was sent to the house of the Daughters of Charity in the Mouffetard District for the service of the poor. She would remain there 54 years!
The thirst for action, devotion and service that burned within Jeanne Marie could not have found a better place to be quenched than this district of Paris. At the time, it was the most impoverished district of the quickly expanding capital: poverty in all its forms, psychological and spiritual. There disease, unhealthy slums, and destitution were the daily lot of the people who were trying to survive.
Jeanne Marie, who received the name Sr. Rosalie, made her “apprenticeship” accompanying Sisters visiting the sick and the poor. Between times, she taught catechism and reading to little girls accepted at the free school. In 1807, Sr. Rosalie, surrounded by the Sisters of her Community, made vows for the first time to serve God and the poor. She made these vows with great emotion and joy.
In 1815 Sr. Rosalie became Superior of the Community at rue des Francs Bourgeois. Two years later the Community would move to rue de l'Epée de Bois for reasons of space and convenience. All her qualities of devotedness, natural authority, humility, compassion and her organizational abilities would be revealed. “Her poor,” as she would call them, became more and more numerous during this troubled time. The ravages of a triumphant economic liberalism accentuated the destitution of those most rejected. She sent her Sisters into all the hidden recesses of St. Médard Parish in order to bring supplies, clothing, care and a comforting word.
To assist all the suffering, Sr. Rosalie opened a free clinic, a pharmacy, a school, an orphanage, a child‑care center, a youth club for young workers and a home for the elderly without resources. Soon a whole network of charitable services would be established to counter poverty.
Her example encouraged her Sisters. She often told them: “Be a milestone where all those who are tired have the right to lay down their load.” She was so simple, and lived so poorly, as to let the presence of God shine through her.
She was very attentive to the manner of receiving the poor. Her spirit of faith saw in them our “lords and masters.” “The poor will insult you. The ruder they are; the more dignified you must be,” she said. “Remember, Our Lord hides behind those rags.”
Her reputation quickly grew in all the districts of the capital and also beyond to the towns in the region. Sr. Rosalie knew how to surround herself with many efficient and dedicated collaborators. Among these, Blessed Frédéric Ozanam, cofounder of the “Society of St. Vincent de Paul,” and the Venerable Jean Léon Le Prevost, future founder of the Religious of St. Vincent de Paul, knew well the road to her office. They came, with their other friends, to Sr. Rosalie seeking advice for undertaking their projects. She was the center of a charitable movement that characterized Paris and France in the first half of the 19th century.
Always in fragile health, Sr. Rosalie never took a moment of rest, always managing to overcome fatigue and fevers. However, age, increasing infirmity, and the amount of work needing to be done eventually broke her strong resistance and equally strong will. During the last two years of her life she became progressively blind. She died on February 7, 1856 after a brief acute illness.
Numerous visitors flocked to the Montparnasse Cemetery where she was buried. They went to meditate at the tomb of the one who was their salvation. But it was difficult to find the gravesite reserved for the Daughters of Charity. The body was then moved to a more accessible site, close to the entrance of the cemetery. On the simple tomb surmounted by a large Cross are engraved these words: “To Sister Rosalie, from her grateful friends, the rich and the poor.” Anonymous hands brought flowers and continue to bring flowers to this gravesite: a lasting yet discreet homage to this humble Daughter of St. Vincent de Paul.