I wonder if you can help, as you seem very knowledgable about the Adair family. It has long been spoken in our family that my great great grandfather was the illegitimate son of Sir Robert Shafto Adair, born prior to his marriage to Theodosia. Information that I have is limited, but would interested in trying to qualify this with your help. We have his mother's name, but I have been unable to trace her in records to date - I may just not have been diligent enough to date, or it may, indeed, be a pseudonym. Would you have any records of such an incident occuring, or perhaps household records of this period that might assist with pointers?
Let me know if you could be of help, either by posted reply, or alternatively through e-mail to the address on this posting if you would prefer.