Oakham - Rushden
note that the place may be County or Country
| SURNAME | PLACE | COUNTY | DATE | CHART | ENTRIES | DATE AMENDED | MEMBERS NAME |
| CAVE | Oadby | LEI | 1660-1680 | SP | 12 | 2008 11 14 | |
| CAVE | Oakham | RUT | 1812-1881 | JG | 5 | 2009 07 09 | |
| CAVE | Old Warden | BDF | 1600-1630 | K | 1 | 2010 09 26 | |
| CAVE | Oldham | LAN | 1760-1848 | HB | 1 | 2011 01 27 | |
| CAVE | Ontario | CAN | 1821-1962 | ZZ*NS004 | 25 | 2005 04 13 | |
| CAVE | Ormskirk | LAN | 1780-1940 | WV | 31 | 2011 01 15 | |
| CAVE | Ormskirk | LAN | 1790-1952 | ZZ*NS045 | 16 | 2010 12 17 | Richard Cave |
| CAVE | Ormskirk | LAN | 1615-1718 | ZZ*NS046 | 16 | 2010 12 21 | |
| CAVE | Ormskirk | LAN | 1841-1899 | ZZ*NS119 | 6 | 2010 02 07 | |
| CAVE | Ormskirk | LAN | 1810-1920 | ZZ*NS132 | 23 | 2011 01 15 | |
| CAVE | Otley | YKS | 1601-1634 | GO | 1 | 2005 04 28 | |
| CAVE | Otley | YKS | 1500-1712 | GX | 19 | 2005 04 28 | |
| CAVE | Otley | YKS | 1550-1720 | GY | 19 | 2008 11 14 | |
| CAVE | Otley | YKS | 1605-1693 | NG | 14 | 1999 12 01 | |
| CAVE | Otley | YKS | 1618-1711 | NH | 12 | 2008 11 14 | |
| CAVE | Owlpen | GLS | 1660-1808 | CW | 32 | 2001 08 07 | |
| CAVE | Owlpen | GLS | 1689-1807 | CX | 33 | 2001 03 03 | |
| CAVE | Owlpen | GLS | 1722-1867 | ES | 40 | 2001 08 31 | |
| CAVE | Owlpen | GLS | 1758-1865 | ET | 8 | 2001 08 31 | |
| CAVE | Owlpen | GLS | 1770-1972 | EU | 20 | 2009 03 20 | |
| CAVE | Owlpen | GLS | 1758-1936 | EV | 25 | 2009 03 24 | |
| CAVE | Owlpen | GLS | 1755-1822 | JP | 11 | 2001 09 04 | |
| CAVE | Owlpen | GLS | 1899-Date | MG | 9 | 2007 08 07 | |
| CAVE | Owlpen | GLS | 1640-1697 | XA | 13 | 2007 09 15 | |
| CAVE | Owmby | LIN | 1550-1685 | NU | 21 | 2001 09 11 | |
| CAVE | Owston Ferry | LIN | 1783-1873 | RT | 22 | 2009 09 04 | |
| CAVE | Oxford | OXF | 1602-1672 | ZZ*NS037 | 9 | 2005 10 02 | |
| CAVE | Oxfordshire | OXF | 1500-1560 | H | 0 | 2008 05 30 | |
| CAVE | Oxfordshire | OXF | 1560-1590 | M | 1 | 2002 03 31 | |
| CAVE | Papworth | CAM | 1746-Date | RF | 44 | 2008 11 14 | Bolling, D R |
| CAVE | Peterborough | NTH | 1693-1807 | LT | 18 | 2000 05 01 | |
| CAVE | Peterborough | NTH | 1694-1749 | VA | 8 | 2001 08 20 | |
| CAVE | Peterborough | NTH | 1700-1807 | ZZ*NS137 | 14 | 2011 01 26 | |
| CAVE | Petling Parva | LEI | 1580-1705 | ZZ*NS009 | 11 | 2005 04 18 | |
| CAVE | Pickwell | LEI | 1500-1657 | J | 0 | 2002 02 04 | |
| CAVE | Piddington | NTH | 1693-1823 | LN | 27 | 2001 09 09 | |
| CAVE | Piddington | OXF | 1620-1685 | SB | 10 | 2001 08 09 | |
| CAVE | Pontefract | YKS | 1812-1890 | ZZ*NS053 | 12 | 2011 02 25 | |
| CAVE | Pool Hall | HEF | 1888-2007 | ZZ*NS066 | 11 | 2008 01 17 | |
| CAVE | Poole | DOR | 1820-Date | MC | 44 | 2009 04 25 | |
| CAVE | Poole | DOR | 1764-1940 | NK | 16 | 2009 07 29 | |
| CAVE | Poole | DOR | 1770-1884 | QN | 29 | 2009 05 29 | |
| CAVE | Poole | DOR | 1848-Date | QO | 19 | 2009 08 30 | |
| CAVE | Poole | DOR | 1846-1938 | SD | 14 | 2009 07 28 | |
| CAVE | Poole | DOR | 1880-Date | VT | 30 | 2010 01 13 | Fleming, S |
| CAVE | Portsea | HAM | 1750-1840 | ED | 18 | 2001 03 14 | |
| CAVE | Portsea | HAM | 1791-1938 | WB | 26 | 2010 01 15 | |
| CAVE | Portsmouth | HAM | 1882-1945 | ZZ*NS087 | 9 | 2008 12 16 | Elizabeth A Chaplin |
| CAVE | Prescot | LAN | 1830-1897 | VR | 39 | 2010 01 12 | Cave, J |
| CAVE | Preston | LAN | 1780-1860 | NZ | 22 | 2009 08 02 | |
| CAVE | Preston | LAN | 1814-1929 | OA | 23 | 2001 09 12 | |
| CAVE | Queeninborowe | LEI | 1608-1633 | O | 4 | 1997 04 01 | |
| CAVE | Quinton | NTH | 1721-1740 | HL | 1 | 2009 08 29 | |
| CAVE | Quinton | NTH | 1726-1784 | HM | 5 | 2001 03 02 | |
| CAVE | Quinton | NTH | 1771-1828 | HN | 1 | 2007 01 25 | |
| CAVE | Ravenstone | BKM | 1759-1780 | HM | 2 | 2001 03 02 | |
| CAVE | Reading St Giles | BRK | 1572-1870 | KM | 22 | 2009 07 16 | |
| CAVE | Richmond | SRY | 1799-1950 | CR | 29 | 2009 07 11 | |
| CAVE | Rickmansworth | HRT | 1730-1792 | ZZ*NS134 | 15 | 2011 01 19 | |
| CAVE | Roade | NTH | 1711-1858 | GE | 1 | 2009 06 06 | |
| CAVE | Roade | NTH | 1630-1769 | HL | 38 | 2009 08 29 | |
| CAVE | Roade | NTH | 1695-1811 | HN | 35 | 2007 01 25 | |
| CAVE | Roade | NTH | 1800-1867 | HO | 39 | 2009 07 03 | |
| CAVE | Rotherby | LEI | 1570-1640 | N | 0 | 2001 02 02 | |
| CAVE | Rothwell | YKS | 1600-1760 | GV | 21 | 2001 04 30 | |
| CAVE | Rothwell | YKS | 1600-1813 | GW | 32 | 2001 08 31 | |
| CAVE | Rothwell | YKS | 1712-1827 | SG | 14 | 2001 08 09 | |
| CAVE | Rothwelll | YKS | 1644-1771 | OO | 27 | 1999 09 01 | |
| CAVE | Royton | LAN | 1820-1840 | HB | 26 | 2011 01 27 | |
| CAVE | Royton | LAN | 1816-1896 | ZQ | 15 | 2010 02 12 | |
| CAVE | Royton | LAN | 1820-1864 | ZR | 9 | 2010 02 12 | |
| CAVE | Rugby | WAR | 1750 | BA | 1 | 2008 04 11 | |
| CAVE | Rugby | WAR | 1890-Date | BL | 15 | 2001 02 07 | Cave, B W |
| CAVE | Rugby | WAR | 1910-Date | BM | 18 | 2001 03 03 | Cave, B W |
| CAVE | Rugby | WAR | 1740-1874 | CP | 14 | 2001 03 02 | Gilbert, C W |
| CAVE | Rugby | WAR | 1695-1818 | IT | 31 | 2001 09 01 | |
| CAVE | Rugby | WAR | 1796-1922 | IU | 24 | 2009 06 23 | |
| CAVE | Rugby | WAR | 1814-1893 | WD | 24 | 2010 01 16 | |
| CAVE | Rugby | WAR | 1893-Date | ZZ*NS116 | 26 | 2010 09 27 | |
| CAVE | Rushden | NTH | 1799-1902 | LC | 30 | 2011 02 13 | |
| CAVE | Rushden | NTH | 1837-1919 | ZZ*NS042 | 34 | 2006 03 08 |