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

1   Jacob's father was John Newcomb and his mother was Mercy Barnaby.  His maternal grandparents were Timothy Barnaby and Martha. He had four brothers and six sisters, named Joseph, Benjamin, John, Jonathan, Catherine, Martha, Alice, Mary, Lydia and Ruth.1 

1 basel.FTW
Further source/citation:
World Family Tree Vol. 9, Ed. 1 @ Tree #2571