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

Jonathan was born in 1712 in Northampton, MA.1   Jonathan's father was Jonathan Alvord and his mother was Thankful Miller.  His paternal grandparents were Alexander Alvord and Mary Vore; his maternal grandparents were William Miller and Patience Miller. He had four brothers and three sisters, named Jonathan, John, Zebadiah, Jonathan, Patience, Mary and Thankful.1 

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