Commune/Paroisse : St Yon [Essonne] 
| Patronymes | Périodes | Actes | |
|---|---|---|---|
| 1. | MAINFROY | 1801 | 1 |
| 2. | MALDANT | 1835 | 1 |
| 3. | MALESKY | 1847 | 1 |
| 4. | MALHERBE | 1739-1814 | 5 |
| 5. | MALLET | 1876-1879 | 2 |
| 6. | MARCHAND | 1771 | 1 |
| 7. | MARCILLET | 1858 | 1 |
| 8. | MARCOGNET | 1740-1863 | 19 |
| 9. | MARECHAL | 1772 | 1 |
| 10. | MARICHAL | 1738-1742 | 2 |
| 11. | MARION | 1786 | 1 |
| 12. | MARLY | 1863 | 1 |
| 13. | MARNET | 1869-1891 | 3 |
| 14. | MAROLLE | 1749 | 1 |
| 15. | MARTIN | 1838-1842 | 2 |
| 16. | MATHURIN | 1758 | 1 |
| 17. | MAUGER | 1886 | 1 |
| 18. | MAUGUIN | 1860 | 1 |
| 19. | MAUPU | 1859 | 1 |
| 20. | MAZURE | 1810 | 1 |
| 21. | MENAGER | 1783-1791 | 2 |
| 22. | MERCIER | 1759-1814 | 5 |
| 23. | MICHAU | 1856 | 1 |
| 24. | MICHEL | 1769 | 1 |
| 25. | MIGNON | 1809 | 1 |
| 26. | MILLET | 1842 | 1 |
| 27. | MILLOCHAU | 1807-1830 | 2 |
| 28. | MILLOCHON | 1776 | 1 |
| 29. | MINIER | 1834 | 1 |
| 30. | MISERY | 1750-1768 | 2 |
| 31. | MOLARD | 1771 | 1 |
| 32. | MONPROFIT | 1790 | 1 |
| 33. | MONTGOBERT | 1872 | 1 |
| 34. | MORE | 1855 | 1 |
| 35. | MOREAU | 1738-1778 | 2 |
| 36. | MOULINEAU | 1830 | 1 |
| 37. | MULLOT | 1805-1855 | 7 |
| 38. | MULOT | 1874-1877 | 3 |
