My husband's ancestors were Alexander Adair and Ann McClure in Laurens District, SC.They had an illegitimate son named Stephen, born 1789?Ann McClure married Francis Braddock and he adopted Stephen, and he assumed the name of Braddock.
My husband's line is from Stephen.The ancestors names following Stephen were: George Washington Braddock, Perry Greenfield Braddock & Mark Perry Braddock, Sr., then my husband was Mark Perry Jr., born in Zephyr, Texas in 1924, & passed away in 1990.
I haven't been able to figure out the Adairs either other than they apparently came from Ireland (Northern?) and were Scottish.
Sorry I took so long to answer, but I have had carpal tunnel.
If I can be of any help, let he know. My email address is: firstname.lastname@example.org.