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Open to any male O'Connor, Connor(s), O'Conner or Conner(s) or man believing that he is descended from a one of these surnames. Participants are sought from all parts of the USA, Canada, Europe, Latin America and anywhere else these surnames may be found. Looking specifically for participants from the British Isles, which is believed to be the source of the names and original ancestors.
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O'Keeffe Surname Group (FamilyTreeDNA)
An O'Keeffe yDNA group has been started at Family Tree DNA. This will include the variant spellings of the surname and is open to those tested with the male O'Keeffe y-chromosomes. This group is hoping to attract those O'KEEFFE, O
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O'Shea Clan Society set up to help O'Sheas and variant surnames with their family history. There is also an O'Shea yDNA Project.
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OGAN Genealogy (FamilyTreeDNA)
The OGAN DNA Project is for any one interested in OGAN research. Only males with the OGAN surname and any variant spelling can test includin: OGEN, OGIN, OOGAN, O'OGAN, OUGAN, OWGAN, HOGAN, WOGAN, etc.
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Linked to the Orlando One-Name Study. The DNA project for the surname of Orlando.
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The O MAHONY Society - Surname yDNA Project
A surname y-DNA project to determine Ireland's O'Mahony Clan families and link emigrants and surname spelling variants.
