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Male John R. Dewey Click to view John R. Dewey in the family tree

John R. was born in 1847 in MICH.1   John R.'s father was Simeon Dewey and his mother was Lydia Higgans.  His paternal grandparents were Simeon Dewey and Elizabeth Turner; his maternal grandparents were William Higgans and Keziah Littlefield. He had three brothers and four sisters, named Charles, Jesse Nelson, Joseph Bradley, Lucinda, Lovina Emoretta, Lydia L. and Mary J.  He was the second youngest of the eight children. He had four half-brothers and four half-sisters, named Lorenzo Low, Francis Asbury, Charles Henry, Simeon J., Eliza, Eliza, Statia and Sophia Statia.  He died at the age of 1 in 1848.1 

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