| 205 | RAE | Edinburgh | 1650+ | |||||
| 600 | RAIL | Constantine / Wendron | 1600-2002 | |||||
| 739 | RAINS | St. Columb Major | 1600-1850 | |||||
| 454 | RAISWELL | Shropshire | All | |||||
| 303 | RANDELL | St. Kew | 1600-1800 | |||||
| 273 | RAPSON | Wendron | All | |||||
| 600 | RASHLEIGH | Constantine / Cury | 1600-2002 | |||||
| 729 | RENODEN | Cornwall | All | |||||
| 729 | RENORDEN | Cornwall | All | |||||
| 729 | RENOWDEN | Cornwall | All | |||||
| 454 | REES | Llansamlet, West Glamorgan | c1700s | |||||
| 028 | RETALLACK + var. | St. Columb Major | c1700s | |||||
| 722 | RETALLACK | Cornwall | All | |||||
| 205 | REYNOLDS | Margate, Kent | 1620+ | |||||
| 445 | REYNOLDS | Perranzabuloe | pre1750 | |||||
| 540 | RICE (Albert John) | Truro | c1877 | |||||
| 510 | RICE | Roseland | 1750+ | |||||
| 453 | RICH | Hatherleigh, Devon | Any | |||||
| 453 | RICH | Stoke Climsland | Any | |||||
| 224 | RICHARDS (John) | St. Agnes | pre1794 | |||||
| 224 | RICHARDS (William) | St. Agnes | pre1794 | |||||
| 303 | RICHARDS | Bodmin / Helston | 1700-1950 | |||||
| 303 | RICHARDS | Launceston / Plymouth | 1700-1950 | |||||
| 424 | RICHARDS | Gwennap | c1700s | |||||
| 445 | RICHARDS | Sithney | 18C | |||||
| 636 | RICHARDS (Emily) | Perranarworthal | All | |||||
| 636 | RICHARDS (Lydia) | Perranarworthal | All | |||||
| 715 | RICHARDS | Redruth | 1700+ | |||||
| 731 | RICHARDS | Gwennap / Redruth | 1750+ | |||||
| 205 | RICHARDSON | Edinburgh | 1600+ | |||||
| 636 | RICKERTS | Somerset | All | |||||
| 051 | ROBERTS (John W.) | Hull, Yorkshire | c1800s | |||||
| 224 | ROBERTS (Sarah) | St. Agnes / Illogan | pre1790 | |||||
| 357 | ROBERTS | Botus Fleming | 1675-1850 | |||||
| 445 | ROBERTS | St. Buryan | 1750-1850 | |||||
| 600 | ROBERTS | Constantine | 1600-2002 | |||||
| 706 | ROBERTS | Sennen | 1765+ | |||||
| 723 | ROBERTS | St. Agnes | 1800-1900 | |||||
| 205 | ROBSON | Oxnam, Scotland | 1600+ | |||||
| 378 | ROCH | Cornwall | c1600s | |||||
| 367 | RODDA | Illogan | 18C | |||||
| 570 | RODDA (Elizabeth) | Bodmin | 1810+ | |||||
| 583 | RODDA | Gulval | 1700-1900 | |||||
| 583 | RODDA | St. Blazey | 1825-1950 | |||||
| 583 | RODDA | Newquay | 1850-2000 | |||||
| 583 | RODDA | Cubert | 1900-2000 | |||||
| 583 | RODDA | Crantock | 1900-2000 | |||||
| 367 | RODDER | Illogan | 18C | |||||
| 205 | ROE | Ridgmont, Bedfordshire | 1750+ | |||||
| 510 | ROGERS | Gerrans/Ladock | 1780-1900 | |||||
| 303 | ROOSE / RUSE | South Petherwin | 1600-1850 | |||||
| 303 | ROOSE / RUSE | Lawhitton | 1600-1850 | |||||
| 702 | ROOSE | Lansallos / Talland | 1750-1850 | |||||
| 327 | ROSCROW | Redruth | All | |||||
| 147 | ROSER | Cuckfield, Sussex | 1800+ | |||||
| 388 | ROSEWALL | St. Ives | Any | |||||
| 388 | ROSEWALL | Towednack | Any | |||||
| 445 | ROSEWARNE | Camborne | pre1620 | |||||
| 327 | ROSKROW | Redruth | All | |||||
| 013 | ROWDON | Launceston | All | |||||
| 013 | ROWDON-ATKINS | Cornwall | All | |||||
| 085 | ROWE | St. Enoder / St. Columb | pre1700s | |||||
| 445 | ROWE | Perranuthnoe | 1750-1850 | |||||
| 445 | ROWE | St. Erth | pre1715 | |||||
| 453 | ROWE | Mevagissey | Any | |||||
| 600 | ROWE | Constantine / Wendron | 1600-2002 | |||||
| 205 | ROWLAND | Margate, Kent | c1500 | |||||
| 205 | RULE | Long Melford, Suffolk | c1725 | |||||
| 453 | RUNDLE | Stoke Climsland | Any | |||||