Do you have anything on a Elizabeth C. Gray who was married to Amelikt Gray??(cannot read his first name on the 1880 census).

On the 1880 census for Dare County, NC, (Amelikt?) Gray was 32, wife Elizabeth C. Gray was 28. They had three children at this time.
Cyrus H. Gray age 8, Josephine D. Gray age 6 and Lorretta Gray age 9mo.
I am trying to find out if this Elizabeth C. Gray is the same person as Cynthia Gray age 47(a widow) on the 1900 census for Dare County, NC. In 1900 Cynthia Gray age 47 lives in the home of Ad?? Williams age 82. Also her two children are in this home. Terah? Gray age 20, and Ella Gray age 17...
Who was this Williams she lived with? a relative???
Any clues are welcome..
Susan