Did not find any death date. Ebenezer m. widow Experience (Hovey) Williams, sister of Abigail, in 1785. From the text listings it appears that the first two children who died in infancy were children of Abigail. The remaining birth dates indicate those children were of Experience.
FROM: History and Genealogy of the Prentice, Or Prentiss Family, in New England, Etc., from 1631 to 1883 by Charles James Fox Binney
'Ebenezer Prentice. Farmer. son of Ebenezer and Sarah; m. 1st Dec. 9, 1762, Abigail Hovey of Newton, Mass.; and m. 2nd Experience Williams who d. Sept. 22, 1816. Children;
Two infants d . in 1763 and 1767
Enos b. ? m Maria Frost, West Cambridge, June 28, 1809. He d. there July 28, 1826, age 34. (= b. abt 1892)
Eunice b. 1786; d. Nov. 4, 1798 age 12.
Maria bapt December 14, 1793 m ____ Roby and lived at Norwich Ct.
Ebenezer b. 1790; d. July 28, 1796 age 6.
Amos b 1793
Susan b. ____.'
FROM: Vital Records of Cambridge MA to the Year 1850
'Prentice, Ebenezer and Experience Williams , m. Nov. 24, 1785.' P. 314