Hello Katie,
I do not know if we have been in contact in the past. I do have some information and insights for two Pennsylvania O'Dair family's as well a Canada O'Dair family. I have some history on many of these lines. I have two websites one genetic DNA testing and personal website for O'Dair information.
This website address will show the dna testing done already for the project along with the address to my personal web site. My kit number in the project is 52277. You may be one of these lines or perhaps even a new undiscovered O'Dair line. Currently there are least four distinct O'Dair family lines from different heritage.
Sincerely
Kerry O'Dair
http://www.familytreedna.com/public/odair/