| 1. | Oshel | | | History, pedigree and application of the name.
www.oshel.com |
| 2. | O'Kelly Heritage Project | | | Kelly (O'Ceallaigh) history and information featuring Irish Lords, legends, feasts, clans, coat of arms and Chieftains. Includes community guestbook, newsletter and reunion details.
www.okelly.net |
| 3. | Oxenham | | | Oxenham and Oxnam family history, includes downloadable listings, biographies, contacts and heraldry. Single name study regardless of geographical location.
www.pjoxenham.fsnet.co.uk |
| 4. | Ottolenghi | | | All family members regardless of country and relation. Includes spelling variants of Ottolenghi and Ottolangui.
www.ottolenghi.org |
| 5. | Oxman | | | Worldwide single name study.
www.littlewhitebull.com |
| 6. | Ollis | | | Multinational family histories pertaining to the name Ollis including photographs, memorials, vital records and lineages during War.
freepages.genealogy.rootsweb.com |
| 7. | O'Rourke | | | Researching the descendants of the Ó Ruairc Clan of Ireland including variants O'Rorke, O'Rourke, Roarke, Rorke and Rourke. Features various pedigrees, mailing list and general history.
oruairc.com |
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