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Male Lonson Dewey Click to view Lonson Dewey in the family tree

Lonson was born on January 30th, 1809.1   Lonson's father was Mark Dewey and his mother was Paulina Hamlin.  His paternal grandparents were Justin Dewey and Lucy Mears. He had five brothers and four sisters, named Mark, James, Salmon, John H., Frederic, Fanny, Amanda, Paulina and Jane. He had two half-brothers and four half-sisters, named David Brainerd, James Clark, Lucy Ann, Lydia A., Mary Jane and Sarah Gates.1 

1 phelps.FTW
Further source/citation:
World Family Tree Vol. 1, Ed. 1 @ Tree #1377