Our ancestor, Zachary Donovan Morales (b. before 1850) was left at a convent by this name by his family (possibly because he was ill). He says he never knew his parents (Luis and Juliana Luna) but I think I have discovered them and they both appear to have immigrated from Mexico (his father in 1836). They later moved to Brownsville, TX and died in LA, CA.
Any help with finding the Le Fleur convent or advice on how to research this would be welcome. Thanks.