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Male Jacob Aldrich Click to view Jacob Aldrich in the family tree

Jacob was born on May 8th, 1676.1   Jacob's father was Jacob Aldrich and his mother was Huldah Thayer.  His paternal grandparents were George Aldrich and Katherine Seald. He had six brothers and five sisters, named Seth, David, Peter, John, Moses, Abel, Huldah, Sarah, Rachel, Mercy and Rachel.1 

1 phelps.FTW @ Tree #1309
Further sources/citations:
World Family Tree Vol. 3, Ed. 1 @ Tree #0061, 0061.ftw