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Male John Adams Dewey Click to view John Adams Dewey in the family tree

John Adams was born on July 28th, 1826 in Hanover, Graft., NH.1   John Adams' father was Andrew Dewey and his mother was Harriet Pinneo.  His paternal grandparents were William Dewey and Rebecca Carrier; his maternal grandparents were Joseph Pinneo and Azubah Wright. He had three brothers and four sisters, named Samuel Mills, Joseph, Julius Pinneo, Eliza, Lucretia, Tryphenia and Lucinda.  He was the third youngest of the eight children. He had a half-brother and two half-sisters, named Robert Martin, Harriet Pinneo and Rebecca Carrier.  He died at the age of 1 on August 16th, 1827 in Hanover, Graft., NH.1 

1 phelps.FTW @ Tree #1353
Further sources/citations:
World Family Tree Vol. 1, Ed. 1 @ Tree #3310, phelps.FTW, World Family Tree Vol. 4, Ed. 1 @ Tree #2332, 2332.ftw