Which organization was the first African American Catholic order founded by Henriette DeLille?

The organization founded by Henriette DeLille is the Sisters of the Holy Family. This order was established in the early 19th century in New Orleans and was significant for being the first African American Catholic sisterhood. Henriette DeLille dedicated her life to serving the marginalized, particularly focusing on the education and welfare of enslaved and free people of African descent. The Sisters of the Holy Family played a crucial role in the development of social services and education within the African American community, emphasizing the importance of faith and community support during a time when such initiatives were scarce.

In contrast, the other organizations listed do not align with the founding efforts and legacy of Henriette DeLille. The Order of the Holy Family, while similar in name, is not directly linked to her; St. Theresa's Orphanage was established later and does not pertain to her foundational work; and Xavier University, while an important institution in New Orleans, is not a religious order but rather a university founded later to serve the educational needs of African Americans. This context highlights the significance of the Sisters of the Holy Family within the historical framework of civil rights and religious service in New Orleans.