Family trees on Ancestry.com have Elizabeth as the daughter of Speir Coffield and Sallie Hunter. Dates make this impossible. Elizabeth's estimated date of birth is 1760. Matthew and Elizabeth married in 1787. Speir Coffield was born in 1798 and Sallie Hunter was born in 1801.
Was she the daughter of Speir Coffield (1728-1777) and West Duck (d 1813)?
"Sketches of Prominent Living North Carolinians" by Jerome Dowd, p. 216, in a biography of Gen. Robert Ransom, states that his grandmother, Elizabeth Coffield, was the daughter of David Coffield and West Duck. But West married Speir. David was her son. Elizabeth would be his sister.