I don't know if this will help, but I am also researching the Emberson family (in the MD, NJ, VA, OH, IN, IL, IA, and MN areas). I came across the following:
[The National Society of the Daughters of the American
Revolution Volume 59
[p.303] Mrs. Mary Emberson Mckinnon.
DAR ID Number: 58889
Born in Union County, Ohio.
Descendant of William Emberson.
Daughter of James Henry Emberson and Charlotte Wyant, his
Granddaughter of William Emberson and Mary Adams Beeman,
his 3rd wife.
Gr-granddaughter of Abel Emberson and Mary Emberson, his
Gr-gr-granddaughter of William Emberson and Orpha
Emberson, his wife.
William Emberson (1751-1818) was placed on the pension
roll, 1818, of Salem County, N. J., for service as
private, 1777, in Captain Courtney's company, Col. Thomas
Proctor's Pennsylvania regiment. He was born in Ireland;
died in Salem, N. J.]
This indicates that William Emberson (1751-1818) also had another son named Abel.
My 4th Great Grandfather's name was Abel Emberson. He was born in Virginia around 1785. I have not been able to find his parents. However, my dad told me when I was a kid that we have some Irish blood in us, and so far, this is about as close as I can come to finding where it came from. From something I found a few years ago, I suspect that Abel's father was also named Abel (born around 1750). Do you have any idea if this could be a brother to William (1751-1818)?
I would be most appreciative of any information you could provide regarding the Emberson family, and I would be most happy to share what I have found regarding them with you.
My name is Jim Emerson,
and my e-mail is firstname.lastname@example.org
Thank you for any assistance you can provide.