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Male Joseph Alvord Click to view Joseph Alvord in the family tree

Joseph was born after May 3rd, 1774.1   Joseph's father was Joseph Alvord and his mother was Lucy Griswold.  His paternal grandparents were Jonathan Alvord and Charity Thrall; his maternal grandfather was Moses Griswold. He had two brothers and six sisters, named William, Moses, Lucy, Polly, Roswell, Sophia, Abby Mather and Eleanor.  He was the third oldest of the nine children.1 

1 phelps.FTW @ Tree #0105
Further sources/citations:
World Family Tree Vol. 3, Ed. 1 @ Tree #0105, 0105.ftw @ Tree #0105