Commune/Paroisse : Orbais (EC) [Brabant wallon]
| Patronymes | Périodes | Actes | |
|---|---|---|---|
| 1. | RADAR | 1855 | 1 |
| 2. | RAVET | 1802-1912 | 33 |
| 3. | RAWET | 1874 | 1 |
| 4. | REGNIER | 1864 | 1 |
| 5. | RENIER | 1887 | 1 |
| 6. | RICHART | 1860 | 1 |
| 7. | ROBERT | 1800-1884 | 17 |
| 8. | ROMAIN | 1870 | 1 |
| 9. | RONVEAUX | 1815 | 1 |
| 10. | ROSSET | 1849 | 1 |
| 11. | ROWES | 1845 | 1 |
| 12. | ROWET | 1840-1862 | 7 |
| 13. | ROWEZ | 1844 | 1 |