I know yours is an old post but here's hoping you are still looking. I have my Jimerson/Jemerson family back to 1793 with Isaac being born in Sussex, New Jersey, moving to Orange/Schuyler Co., New York and dying there in 1865. I am descended from his first wife, Betsy Dutcher, by son, Abram, to grandson, Isaac V. to my grandmother, Clara.
It is so frustrating to have nothing before his birth, not even a parent's name. Even Abram's brothers families who still live in New York don't have anything to help. To see that you think it is Scottish is the first guess I have seen for nationality. I can't even find wills with his name from a parent.
Have you had any success since this post? Thanks