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Female Susannah Dewey Click to view Susannah Dewey in the family tree

Susannah was born on July 21st, 1768 in lebanon, CT.1   Susannah's father was Abraham Dewey and her mother was Grace Gates.  Her paternal grandparents were Josiah Dewey and Sarah Huchinson (Hutchinson); her maternal grandparents were Josiah Gates and Grace Rathbun. She had four brothers and three sisters, and also a sibling of unknown gender, named Abraham, Josiah, Sylvester, Freeman, Lavinia, Submit, Amy Grace and Alpheus.  She was the second youngest of the nine children.1 

1 phelps.FTW @ Tree #1353
Further sources/citations:
World Family Tree Vol. 1, Ed. 1 @ Tree #3310, phelps.FTW, World Family Tree Vol. 4, Ed. 1 @ Tree #2332, 2332.ftw