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Male Henry Rice Dewey Click to view Henry Rice Dewey in the family tree

Henry Rice was born on October 8th, 1817 in White Creek, NY.1   Henry Rice's father was Joel Dewey and his mother was Isabella Griswold.  His paternal grandparents were Josiah Dewey and Huldah Frost; his maternal grandparents were Sylvanus Griswold and Elizabeth Marvin. He had three brothers and three sisters, and also a sibling of unknown gender, named Joel, Sylvanus G., Sylvanus Dorr, Mary McIntire, Isabel A., Harriet Rice and Eliza Marvin.  He was the second youngest of the eight children. He had a half-brother named Melville.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