The acts in these registers were recorded in Spanish. The Spanish phonetic spelling of a surname often varied significantly from the French spelling. In addition, first names were Hispanicized: Etienne became Estevan; Jacques became Santiago; Elizabeth became Isabella, and Hélène became Elena. Surname spelling variations multiply under the Spanish as well. Undoubtedly, some of these similar names refer to the same family.

In many entries, priests, witnesses and sponsors wrote in a hand that formed different letters in exactly the same way. U/N, U/V, C/B, S/Z, A/O, and E/C are the most common instances where the letters are simply indistinguishable. This uncertainty must be kept in mind, particularly in regard to unfamiliar surnames.

The Spanish priests also introduced several new variations that were not evident during the French period. "B" and "V" as well as "S" and "C" are often used interchangeably. "H" appears and disappears before such vowels as "A" and "E" while "X", "G", and "J" are all pronounced "H" and thus are sometimes used interchangeably in entries. "I" is often replaced by "Y" in Spanish entries.

The number next to the name in the index does not refer to the page number but to the entry number.

Please note, some of these files are quite large and may take some time to download. Please be patient.

1777-1783
- St. Louis Cathedral, New Orleans, Baptism, 1777-1783 index
- St. Louis Cathedral, New Orleans, Baptism, 1777-1783

1783-1786
- St. Louis Cathedral, New Orleans, Baptism, 1783 - 1786 index
- St. Louis Cathedral, New Orleans, Baptism 1783-1786

1786-1792
- St. Louis Cathedral, New Orleans, Baptism, 1786 - 1792 index
- St. Louis Cathedral, New Orleans, Baptism, 1786-1792

1792-1798
- St. Louis Catherdral, New Orleans, Baptism, 1792-1798 index
- St. Louis Cathedral, New Orleans, Baptism, 1792-1798

1798-1801
- St. Louis Cathedral, New Orleans, Baptism, 1798-1801 index
- St. Louis Cathedral, New Orleans, Baptism, 1798-1801

1801-1804
- St. Louis Cathedral, New Orleans, Baptism, 1801-1804 index
- St. Louis Cathedral, New Orleans, Baptism, 1801-1802 part 1
- St. Louis Cathedral, New Orleans, Baptism, 1802-1804 part 2
- St. Louis Cathedral, New Orleans, Baptism, 1804-1804 part 3

1804-1805
- St. Louis Cathedral, New Orleans, Baptism, 1804-1805 index
- St. Louis Cathedral, New Orleans, Baptism, 1804-1805 part 1
- St. Louis Cathedral, New Orleans, Baptism, 1805-1805 part 2

St. John the Baptist, Edgard, Baptism, 1792-1818 part 1
St. John the Baptist, Edgard, Baptism, 1792-1818 part 2

1792-1798
- St. Louis Catherdral, New Orleans, Baptism, 1792-1798 index
- St. Louis Cathedral, New Orleans, Baptism, 1792-1798

1798-1801
- St. Louis Cathedral, New Orleans, Baptism, 1798-1801 index
- St. Louis Cathedral, New Orleans, Baptism, 1798-1801

1805-1807
- St. Louis Cathedral, New Orleans, Baptism, 1805-1807 index
- St. Louis Cathedral, New Orleans, Baptism, 1805-1806 part 1

- St. Louis Cathedral, New Orleans, Baptism, 1806-1807 part 2

1807-1809
- St. Louis Cathedral, New Orleans, Baptism, 1807-1809 index
- St. Louis Cathedral, New Orleans, Baptism, 1807-1808 part 1
- St. Louis Cathedral, New Orleans, Baptism, 1808-1809 part 2
- St. Louis Cathedral, New Orleans, Baptism, 1809-1809 part 3

1809-1812
- St. Louis Cathedral, New Orleans, Baptism, 1809-1811 index
- St. Louis Cathedral, New Orleans, Baptism, 1809-1810
- St. Louis Cathedral, New Orleans, Baptism, 1811-1812 index
- St. Louis Cathedral, New Orleans, Baptism, 1811-1811 part 1
- St. Louis Cathedral, New Orleans, Baptism, 1810-1811 part 2
- St. Louis Cathedral, New Orleans, Baptism, 1811-1812 part 2

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