Elkinton Family Genealogy Forum
I have a George Elkington in my family tree with very similar information as you have. However, my George was born December 07, 1650, was married to Mary Bingham (date unk) and died Dec 29 1713. The 1650 date of birth would seem more in line, since you say he eimgrated to US in 1677 and married Mary Bingham in 1683, and later married Elizabeth Arden in 1713.
George Elkington was my 9th great-grandfather.
Please let me know if this information could possibly be correct.