I don't know if this adds anything to your knowledge of the Eleazer Smith family but I will post it anyway. Let me know if you are aware of more children or who Abigail Smith married.
From Cumberland Co., NJ Genealogical Data by H. Stanley Craig:
OGDEN, Mary of Fairfield, w. (will) March 14, 1763; Pr. Apr. 9, 1763. Children: Eleazer Smith, Martha Elmer, Rebecca, Sarah and Abigail Smith, Mary Banks, Esther Mayhew and Elizabeth Smith.RWBaker@prodigy.net