Blessed Adèle de Batz de Trenquelléon

detail of a portrait of Blessed Adèle de Batz de Trenquelléon, date unknown, artist unknown; swiped off Wikimedia CommonsAlso known as

  • Sister Marie of the Conception



Born to the French nobility, the daughter of Baron Charles de Trenquelléon and Marie-Ursule de Peyronnencq de Saint-Chamarand, she was related through her mother to Saint Louis IX; she was baptized when only a few hours old. Her father, the baron, fought on the side of King Louis XVI in the French Revolution in 1791, which led to exile for him and his family to England in November 1791, then Spain in 1797, then Portugal in 1798, back to Spain in 1800, and finally a return to France in 1801. Adèle made her First Communion on 6 January 1801 in San Sebastian, Spain, and received Confirmation on 6 February 1803 from the bishop of Agen, France.

In her early teens, Adèle began to feel a call to religious life, and wanted to join the Carmelites, but her mother convinced her to wait till she was grown to make the decision. On 5 August 1803 Adèle and some like-minded friends founded the Little Society, an informal group for spiritual study and support which Adèle encouraged by active correspondence, and which by 1808 had about 60 members, laity and priests. Adèle started visiting the area sick at home, and brought poor children to her home to teach them the faith. Learning of a group founded by Blessed William Joseph Chaminade in Bordeaux, France, the Sodalities of Our Lady, that was similar to the Little Society, Adèle began corresponding with Chaminade. By 1809 the Society had been modified to be more like Chaminade’s Sodality.

On 20 November 1808, Adèle rejected an offer of marriage and concluded that she would enter religious life at some point. Family obligations and government edicts, however, delayed her work until 1816. With some guidance by Chaminade, Adèle renounced her inheritance in favour of her brother, Charles, said good-bye to her family, and with some like-minded members of both the Society and Sodality, she moved into a vacant convent in Agen, France and started the Daughters of Mary Immaculate (Marianist Sisters). The Sisters combined the contemplative nature of the Carmelites with a mission to teach, Adèle served as their first superior, and the group made their first vows on 25 July 1817.

Adèle became friends with Saint Émilie de Rodat in 1819, and the two corresponded regularly. The Sisters continued to grow, but Adèle’s health began to fail. From 1825 on she was restricted to a correspondence ministry, and spent the last months of her life working for the expansion and recognition of the Sisters. The Sisters continue their good work today with about 340 members spread out in Togo, Ivory Coast, the United States, Brazil, Chile, Colombia, Ecuador, Argentina, South Korea, Japan, India, Spain, France and Italy.






Additional Information


Hosanna to the Son of David! – Blessed Adèle’s dying words

MLA Citation

  • “Blessed Adèle de Batz de Trenquelléon“. CatholicSaints.Info. 21 July 2021. Web. 4 December 2021. <>