| 1. | Perkins List | | | Rootsweb discussion group sharing ideas, information and questions pertaining to the Perkins family, as maintained by Sonya Perkins Lynch. homepages.rootsweb.com |
| 2. | Penhallow | | | Worldwide central resource for the Penhallow, Penhollow and Penharlow lineages. Includes international database, history, personal pages, land maps, and the latest family news. www.penhallow.net |
| 3. | Petitclerc | | | Research exchange and means of communication amongst family members worldwide. www.petitclerc.org |
| 4. | Patterson | | | Mission is to collect and archive associated information pertaining to the name and its worldwide application. www.angelfire.com |
| 5. | Pargeter Family Tree | | | Single name global study as maintained by Dorothy Glassborow from Leamington Spa, Warwickshire ENG. www.pargeter.spacomputers.com |
| 6. | Percy: The Ancient House | | | Historical overview of the name and its application as archived by Charles Percy. www.geocities.com |
| 7. | Prisk | | | Worldwide, single name study including variant Priske. www.prisk.org |
| 8. | Porter Research | | | Database of lineages submitted by various families. Includes query page and links to associated websites. freepages.genealogy.rootsweb.com |
| 9. | Pancake Pages | | | Research and resources for the name Pancake and variants Pankake and P(f)annenkuchen. www.usfamily.net |
| 10. | Pilafian Web | | | E-mail and web hosting for Pilafians and relatives worldwide, to facilitate contact and to maintain a central place to publish family history. www.pilafian.com |
| 11. | Pavey | | | Researching the name and its application. Includes vital records of which submissions are welcome. www.pavey.org |
| 12. | Pomery | | | Researching the name and its worldwide application including the variants Pomeroy, Pomry, Pomroy, Pommery and Pumroy. Registered with the Guild of One-Name Studies, number 3400. freepages.genealogy.rootsweb.com |
| 13. | Penny/Penney | | | Collection and dissemination of information pertaining to the name and variant including global application. www.inch.com |
| 14. | Pohl | | | Documenting lineages from around the world. Submissions are welcome. members.aol.com |
| 15. | Pagel | | | Single name resource hub including census data, city directories, death records, obituaries and associated links. freepages.genealogy.rootsweb.com |
| 16. | Peavey Research Center | | | Wills, brick walls, letters, family group sheets, scanned documents, speculations, family trees, census images and copies of vital records. freepages.genealogy.rootsweb.com |
| 17. | Phebus | | | Worldwide single name study including the spelling variants Phoebus, Phebues, Febus and Fibus. Features searchable database, forum and research resources. www.phebus.com |
| 18. | Pedde | | | Worldwide cyber meeting hall for everything Pedde. www.pedde.net |
| 19. | Pentecost | | | Research pertaining to the name and variants Penticost and Pentacost. Includes pedigrees, photographs, census transcipts and associated documents. pentecost.org |
| 20. | Plesek | | | Worldwide branches of the tree that originate from the small village of Hostasovice in the Czech Republic. Research includes the spelling variants Pleshek and Plesak. web.quick.cz |
| 21. | Pakes | | | Registered with the Guild of One-Name Studies, maintained by Stuart Murray Pakes. www.murrlyn.co.uk |
| 22. | Pyrant: USA | | | Researching the family name in America. Includes links to associated resources and lists various occurrences of the name throughout the 19th and 20th centuries. www.geocities.com |
| 23. | Presley-Pressley Family History | | | Centralized collection of data and other resources relating to the names Presley and Pressley, including spelling variants. www.presley-pressley.com |
| 24. | Preece | | | Registered with the Guild of One Name Studies, number 1100. Includes variants Preace, Priess, Priece, Prece, Preese, Preeze, Preice, Preace, Prese, Prease and Priese. Maintained by Ian Preece, Worcestershire UK. www.preece67.fsnet.co.uk |
| 25. | Powditch Family | | | One name study including worldwide pedigrees, research sources, stories, illustrations, statistics and associated links. www.powditch.plus.com |
| 26. | Peach Family History | | | Daniel Stephen Peach traces the worldwide history of the family name. Includes Viking and Norman ancestors, William de Peche, and the etymology from Peche to Peach. www.freewebs.com |
| 27. | Parle | | | Researching the name and its worldwide application. Features English and Irish origins, BDM resources, military and medieval history, coat of arms, and various family lines. genealogy.parle.org.uk |
| 28. | Porges | | | Researching the name and its global application including the spelling variants Porgès, Porgesz and Porjes. Features biographies, pedigrees and historical information. www.porges.net |
| 29. | Peirce Pages | | | Family name research including people, history, resource center and mail bag. peircepages.peircecentral.com |
| 30. | Patrick | | | Study group researching the name Patrick and its variants. Includes BDM databases, census details and various family pedigrees. www.geocities.com |
| 31. | Pasteur Galaxy | | | Association of Pasteur families aiming to unite all who bear the patronymic. Encourages the promotion, development and popularisation of the history of the name and its global application. Site is available in both French and English. php.pasteur.net |
| 32. | Pratley One-Name Study | | | Resources and references including people and places, origins, pedigrees and general history. Also features variants Prattley and Pratly. www.pratley.info |
| 33. | Porteous Research Project | | | Research by Bruce Porteous into the history and migration of the Porteous/Porteus family worldwide. homepage.ntlworld.com |
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