Commune/Paroisse : St Yon [Essonne] 
| Patronymes | Périodes | Actes | |
|---|---|---|---|
| 1. | PAILLARD | 1816 | 1 |
| 2. | PALEAU | 1788 | 1 |
| 3. | PALIGAUT | 1740 | 1 |
| 4. | PANET | 1891 | 1 |
| 5. | PAYEN | 1825 | 1 |
| 6. | PELLERAY | 1882 | 1 |
| 7. | PELTIER | 1825-1845 | 3 |
| 8. | PERIE | 1773 | 1 |
| 9. | PERIER | 1787-1788 | 2 |
| 10. | PERRAULT | 1884 | 1 |
| 11. | PERTHUISOT | 1898 | 1 |
| 12. | PETIT | 1740-1793 | 9 |
| 13. | PICAULT | 1792-1793 | 2 |
| 14. | PICOT | 1763 | 1 |
| 15. | PIGNERET | 1753 | 1 |
| 16. | PILLAS | 1879-1889 | 2 |
| 17. | PILLET | 1828 | 1 |
| 18. | PINAULT | 1738-1836 | 8 |
| 19. | PINCHAUT | 1767 | 1 |
| 20. | PIQUET | 1739 | 1 |
| 21. | PISSOT | 1888-1894 | 2 |
| 22. | PODEMY | 1825 | 1 |
| 23. | POING | 1840-1891 | 2 |
| 24. | POINTIN | 1858 | 1 |
| 25. | POIRIER | 1868 | 1 |
| 26. | POITREMAUD | 1838 | 1 |
| 27. | POITRIMOL | 1809-1893 | 8 |
| 28. | PONS | 1851 | 1 |
| 29. | PORTEAU | 1764 | 1 |
| 30. | PORTEHAULT | 1763 | 1 |
| 31. | POTEAU | 1851 | 1 |
| 32. | POTIER | 1750 | 1 |
| 33. | POULAIN | 1855 | 1 |
| 34. | POUSARD | 1830 | 1 |
| 35. | POUSIER | 1740 | 1 |
| 36. | PREAULT | 1791 | 1 |
| 37. | PREVOST | 1746-1833 | 4 |
| 38. | PROVOST | 1744 | 1 |
| 39. | PRUNIER | 1750 | 1 |
| 40. | PUTEAU | 1752 | 1 |
