Each surname is followed by the abbreviations for each county in which it occurrs at least
once. The meaning of the County Abbreviations can be found at: http://www.netcentral.co.uk/~wjh/ccodes.html
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O Brien Edn O Connor Mdx O Harry Ayr O Neal Clk O Neil Rfw O'brien Ans O'bryan Mdx Sry O'carty Sal O'connelly Kkd O'connor Lls Mdx O'donnell Mdx Rfw O'dowd Sry O'hare Ayr O'harro Rfw O'henly Inv O'kane Rfw O'loan Ant O'mullen Ant O'neill Ant O'reilly Rfw O'slen Yks O Ken Lan Mdx Oades Sry Oaff Dev Oak Ssx Oakden Lec War Oake Wil Oakes Chs Ham Ken Lan Mdx Som Sts.Wor War Wor Wry Oakes? Lan Lan.Chs Oakey Cam Gls Mdx Sal Sts Wor Oakiston Dby Oakley Ess Ham Hrt Ken Lec Mdx Mon Nfk Sal Som Sts War Oakly Mdx Nth Oakman Ant Oaks Sfk Oakven Sry Oare Sal Oastler Lan Oaten Dev Som Oates Dur Ery Ess Gla Gls Lan Lan.Chs Mdx War Wry Yks Oatley Dby Ess Sal Som Oatley? Som Oats Con Dev Gls Nry Oatton Nry Oatway Mdx Obank Wry Obee Mdx Oberman Mdx Obert Mdx Obey Sry Obiron Dur Oborne Mdx Oboyl Wor Oboyle Ant Obreen Lan Obrian Edn Lan Rfw Sry Wry Obrien Ant Chs Dev Ery Ham Lan Lks Mdx Mon Sry War Wry Obrient Ess Obrin Nbl Obrine Ant Dur Obrion Lan Obryne Nbl Oburns Edn Ocallihan Lan Ocane Per Ochiltree Lls Ockelshaw Lan Ockenden Ham Ssx Ockerby Lan Ockersley? Lan Ockley Sry Ockram Lan.Chs Ockwell Brk Ocock Dev Ocock? Dev Oconnar Ken Oconnel Dur Oconnell Ant Chs Ham Mdx Oconner Lan Oconnor Ant Ham Lan Mdx Sry Sts Wor Octon Nfk Od Ken Odam Hun Odam? Dby Oday Wry Odber Dor Odd Mdx Oddel Ham Odden Mdx Oddie Lan Lan.Wry Yks Oddinale War Odds Ken Oddy Ess Wry Ode? Lin Odell Bdf Ken Mdx Sry Odell? Mdx Oden Mdx Odey Gls Ham Odle Bdf Odle? Bdf Odley Sal Odlin Mdx Odling Lin Odly Con Odonagan Ant Odonald Wry Odoned Mdx Odonnal Wry Odonnel War Odonnell Ant Ham Lan Lks Mdx Sry Sts Wor Odonnoghue Mdx Odonovan Wry Oduerden? Lan Odwyer Lan Ody Sry Odyear Sry Of Saxe Weimar Mdx Ofee Ant Ofey Ant Offard War Offen Ess Ssx Offer Gls Ham Som Wil Offerd Sry Offic? Ssx Officer Ant Offin Ess Offler Dby Offord Ess Sry Offord? Mdx Offwood? Sry Ofler Wry Ogborn Gls Mdx Ogbourne Mdx Ogden Cae Chs Dby Lan Mdx Rut.Nth Sts War Wry Ogden? Lan Ogee Ntt Ogelvie Ans Ogg Abd Ans Edn Fif Lan Ogier? Sry Ogilby Ant Sal Ogilly Ant Ogilvey Mdx Per Ogilvie Abd Ans Edn Elg Fif Sti Yks Ogilvy Ans Ogily Ans Ogle Cam Edn Lan Oxf Sal Som Sry Ogleby Ant Oglesby Cam.Nfk Ery Lin Ogorman Ham Ogrady Lan Mdx Ogram Ery Ogston Abd Ans Ban Ogulodfid Sal Ohagan Dev Rfw Ohair Nbl Ohale Ant Ohanlow Som Ohara Ant Edn Fif Ham Lan Lks Nbl Sry Sts War Wry Ohard? Mdx Oharra Rfw Wry Oharrah Wry Ohiny? Mdx Ohler Sry Ohoron? Chs Ohse? Mdx Okane Ant Oke Ham Mdx Oke? Con Okearney? Som Okeday Con Okeefe Mdx Okeley Hef Okely Hef Okey Cam Mdx War Okey? Mdx Old Con Dur Edn.Mln Nfk Old? Dur Oldach War Oldake War Oldaker Brk Sts War Oldams? Sts Oldbury Sts.Wor Olden Sts.Wor Olden? War Older Ssx Olderness? Mdx Oldershaw Sry Oldfield Bkm Cam.Nfk Chs Dby Den Dev Ken Lan Nfk Ntt Sry Wry Yks Oldfield? Chs Oldham Chs Gla Gls Ham Lan Lin Mdx Nbl Ntt Sry War Wry Olding Gls Ham Ham.Iow Sfk Oldland Ham Oldman Nfk Sry Oldmecolvin? Ssx Oldom War Oldridge Ham Mdx War Oldrieve Dev Oldring Ham Oldroy Wry Oldroyd Wry Oleary Dev Mdx Olephaint Per Olery Ant Olevir Cgn Olford Sts Olfree Cam Olgar? Mon Olibett Mon Olifent Sry Oliphant Fif Lks Mdx Olive Con Ess Gls Lan Nfk Sts Oliver Arl Bre.Hef Cam Cgn Cmn Con Cul Dby Dev Dur Edn Ery Ess Gla Gls Ham Ham.Iow Hef Hrt.Cam Ken Lan Lan.Chs Lin Lks Mdx Nbl Nfk Nry Nth Oxf Pem Rfw Rox Sal Som Sry War Wil Wor Wry Yks Oliver? Cgn Mdx Olives War Wor Olivey? Con Olivyr? Mdx Ollard Mdx Olle Sfk Ollerenshaw Dby Lan Ollerhead Chs Ollernshaw Dby Ollerton Lan Ollerwetham Dby Olley Nfk Sfk War Ollier Chs Ollif Hef Olliff Mdx Olliffe Sry Ollis Som Olliver Ken Mdx Olmerod Lan Olney Wry Oloan Ant Olone Ant Olorenshaw War Olver Con Dev Olwer? Dev Olyett? Mdx Olynn Ant Omaley Ant Wor Wry Omand Ork Ombley Ham Omeara Mdx Omerod Lan Omond Ork Onchard? Mdx Oncher? Mdx Oncil? Lan.Chs Oneal Chs Cul Lec War Oneall Lec Onealle? Lan Oneil Ant Dfs Dur Ham Lan Lks Mdx Som Wry Oneill Ans Ant Ham Lan Lks Mdx Onell Ant Onell? Gls Oney Mdx Ongan? Gls Onghamy Nbl Onian Sal Oniel Sry Onion Sal Oniones Sal Onions Sal Sry War Wor Wry Onley Sts Onllen? Sry Onsbourne War Onslew Ken Onslow Mdx Sal Onswell Ham Ontard? Sts Ontram Sry Onyon Nfk Ooakes? Mdx Ooler Cul Openshaw Lan Opie Con Dev Opil Con Oppenheim War Oppey Con Oppy Con Orall Lan Oram Mdx Som Sts War Wil Oram? Mdx Oran? Gla Orange Dur Lec Nbl Oravy Som Oraw D Ant Oraw Ant Orbell Nfk Orbon? Mdx Orchard Dev Ess Gls Ham Mdx Sts War Orchardson Ans Orchin Sry Ord Cul Dur Nbl Orde Rox Ordige Sts Ordish Lec Oreiley Ham Oreilly Lan Wry Oreland Sal Orell War Orford Lan.Chs Sfk War Organ Gls Orgill Sts War Orledge Som Orley Lin Orman Lan Lin Ormand Pem Orme Lan Lec Sts War Ormer Nry Ormerod Chs Lan Mdx Ormes Lec Ormeston Lan Ormicher? Lan Ormiston Had Lks Per Ormiston? Nfk Ormond Ans Lin Wry Ormond? Mdx Ormriding? Lan Ormrod Lan Yks Ormrod? Lan Ormsby Lan Wig Ormshaw Wry Ornes? Chs Ornsby Dur Oroen? Brk Orook Wry Ororke Ant Lks Orourke Ant Oroyd? Wry Orpen Ess Orpin Ken Mdx Orpwood Oxf Orr Ans Ant Arl Ayr Dnb Dur Edn Ess Lks Nbl Rfw Orr? Cmn Orrel Ess Orrell Lan Orrey Lin Orridge Lan Orrige Sfk Orril Lan Orris Ess Orris? Mdx Orritt Chs Orrock Ans Fif Orrock? Fif Orrsland Nfk Orsbon Nfk Orsborn Nfk Orsborne Nfk Sfk Orsini Mdx Orson Lec Orstin Ntt.Dby Orth Ham Ortin War Ortner Mdx Orton Dur Lec Mdx Nfk Ntt Sts War Yks Ortor War Orver Nry Orveys Mdx Orway War Orwell Ant Orwine Cul Oryan Gls Lan Osam Lec Osbalderston Lan Osbaldiston Mdx Osbelderton? Mdx Osbon Ess Osborn Bdf Dby Dev Ess Gls Hrt Hun Ken Lec Lin Mdx Nfk Ork Oxf Rut.Nth Sfk Som Sry Ssx Sts War Wry Osborne Ant Bkm Cam Con Cul Dby Dur Ess Ken Lin Lks Mdx Nfk Oxf Sfk Som Sry Ssx Sts War Wry Osbourn Dev Sry Osbourn? Sfk Osbourne Cam Ken Osburn Dev Edn.Mln Sal Osburne Dev Oseland War Oseman War Osford Ess Osgarthorpe Wry Osgood Brk Oshaughnessy Con Oshor? Ess Osiah War Osinbrook Ham Oskyson Lks Osler War Osman Ham Mdx Osmand? Wry Osmay Mdx Osmon Mdx Osmond Dev Mdx Som Ssx Ossborn Nfk Ossidge? Sfk Osterfield Wry Ostler Ess Lan Lin Ostley Ken Ostley? Mdx Osullivan Ham Mdx Oswald Ans Ery Lks Per Sti Wry Oswin Ken Lin Ntt Otbie? Sry Othaures Nfk Othen? Brk Other Name U K Sry Other? Brk Otherton Lan Otick? Som Otley Ery Mdx Sfk Sry War Otman Mdx Otool Mdx Ottaway Mdx Otter Lin Ntt Otterrill Ken Otterway Sry Ottley Mdx Ottridge Wil Otuay? Mdx Otway Mdx Nfk Sts Oubram Wry Ough? Con Oughterlong Ans Oughton? Mdx Ould Con Ouley Wry Oulson Dur Oulton Chs Ken Ours Ess Ousey? Lan Ouslam? Dby Outen Oxf Outhwaite Dur Yks Outon Ssx Outram Lan Lin Oven Ken Mon Oven? Mdx Ovenden Ken Wry Ovendon Ken Oveng? Edn Ovenham Dev Ovens Lan Nbl Sry Over Brk Mdx Ntt Yks Overall Ken Mdx Overde Mdx Overell Mdx Overend Lan War Wry Overhead Wry Overherd Wry Overhill Cam Hrt Overin Lan.Wry Wry Yks Overince Wry Overland Nfk Overmas Dev Overs? Mdx Overson Nfk Overton Cam Hef.Wor Lin Nfk Sfk Sry War Overy Ssx Ovington Mdx Owan Mer Owans Mer Owells War Owen Agy Ayr Bre Brk Cae Cam Cgn Chs Dby Den Ess Fln Gla Gls Ham.Iow Hef Ken Lan Lan.Chs Lin Mdx Mer Mgy Mon Nth Ntt Oxf Pem Sal Som Sry Sts War Wry Yks Owen? Ess Lan Owens Agy Ant Ayr Bre Cae Cgn Chs Den Den.Fln Edn Ess Fln Gla Ham Lan Lks Mdx Mer Mer.Den Mgy Mon Sal Sry War Wor Wry Yks Owers Ess Owles Sfk Owners Lan Owren? Wry Owstn Ery Owston Ery War Wry Oxberry Chs Nfk Oxbonard Ess Oxborrow Sfk Oxborrow? Sfk Oxbory Nfk Oxbrow Ess Oxburn? Chs Oxbury Nfk Wry Oxenham Dev Oxford Dev Mdx Sfk Oxindale Ery Oxlade Bkm Oxlee Nry Oxley Dur Lan Lin Mdx Nfk Som Oxley? Som Oxman Dev Oxtaby Wry Oxtaly? Mdx Oxton Chs Lan Oyar? Sry