An unknown "Negro woman" was enslaved by Col. John Storer and included in his estate.

"Inventory of the estate of John Storer, Esq., late of Wells, appraised, dated Wells, 12 Nov 1768, by John Wheelwright, Nathaniel Kimball & Samuel Jeffords, at £4358/15/1 ... includes [near the end of a lengthy list] a Negro woman, £6."Frost, pp. 632-3

Bibliography:

Maine Probate Abstracts Vol I 1687-1775 - John Eldridge Frost (1991)