Maria Louis O'BrienAge: 7 years1869–1877
- Name
- Maria Louis O'Brien
- Given names
- Maria Louis
- Surname
- O'Brien
 Birth | December 1869 27 21 |
 Birth of a brother | Emile John O'Brien Jr. May 1872 (Age 2 years) |
| Birth of a brother | Robert Mushet O'Brien September 1873 (Age 3 years) |
 Death | March 28, 1877 (Age 7 years) Cause of death: Scarlet fever |
| Family with parents |
| father |
Emile John O'Brien Birth: October 12, 1842 — New Orleans, Orleans, Louisiana, United States Death: April 1, 1914 — New Orleans, Orleans, Louisiana, United States |
| mother |
Kate Mushet Birth: March 1848 29 22 — New Orleans, Orleans, Louisiana, United States Death: February 20, 1932 — New Orleans, Orleans, Louisiana, United States |
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Marriage: December 2, 1868 — Orleans, Louisiana, United States |
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13 months herself |
Maria Louis O'Brien Birth: December 1869 27 21 — New Orleans, Orleans, Louisiana, United States Death: March 28, 1877 — New Orleans, Orleans, Louisiana, United States |
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3 years younger brother |
Emile John O'Brien Jr. Birth: May 1872 29 24 — New Orleans, Orleans, Louisiana, United States Death: July 3, 1962 — Louisiana, United States |
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17 months younger brother |
Robert Mushet O'Brien Birth: September 1873 30 25 — New Orleans, Orleans, Louisiana, United States Death: August 26, 1943 — New Orleans, Orleans, Louisiana, United States |