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

Mark was born on February 1st, 1818 in Great Barrington, Berkshire, MA.1   Mark'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 Lonson, 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.  He died at the age of 62 on June 12th, 1880 in Hudson, NY.1 

Family Details of Mark's family with Laura Cook

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