| Registered Surnames | Researcher | |
| Nerault/Nereaux | Cheré Coen | |
| Ory(Aury/Orry) | Margie Pearce | |
| Ory,Oury | Anna M. (Ory) Langley | |
| Ouber | Karen Wightkin | |
| Oubre/Ouvre | Gail Whitney | |
| Papet | Erma A Truxillo | |
| Perez | Karen Wightkin | |
| Perilloux | Kathy Hill Dwayne A. Montz Claude Fourroux John Sheldon Perilloux |
|
| Perret | Denise Guntner Talbot | |
| Phelps | Roy Phelps | 16 Jan 2000 |
| Pichoff | Bruce E. Pichoff, II | |
| Picou | Shirley Nichols Saundra Overton |
|
| Pitre | Shirley Nichols |