I am not sure if we are talking about the same Martha or not. I know she was born around the time that you have posted. Do you know if she had a brother named William? I have nothing on Martha, although I do have a cousin who has traced our roots way back. I will get in touch with them today or tomorrow and see what they have. If it is the same family that would be great, we could fill in the blanks!
If you could send me your email address we could coorespond that way if you'd like, mine is firstname.lastname@example.org