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

Joseph was born on July 6th, 1748.1   Joseph's father was Jonathan Alvord and his mother was Charity Thrall.  His paternal grandparents were Jeremiah Alvord and Sarah Eno. He had a brother and a sister, named Jonathan and Charity. He had two half-brothers and a half-sister, and also a half-sibling of unknown gender, named John, Unknown, Elizabeth and James.1 

Family Details of Joseph's family with Lucy Griswold

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