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(Gender unknown) Eliza Marvin Dewey Click to view Eliza Marvin Dewey in the family tree

Eliza Marvin was born on September 9th, 1809 in Feeding Hills, Hampden Co. MA.1   Eliza Marvin's father was Joel Dewey and his/her mother was Isabella Griswold.  His/her paternal grandparents were Josiah Dewey and Huldah Frost; his/her maternal grandparents were Sylvanus Griswold and Elizabeth Marvin. He/she had four brothers and three sisters, named Joel, Sylvanus G., Henry Rice, Sylvanus Dorr, Mary McIntire, Isabel A. and Harriet Rice.  He/she was the fourth oldest of the eight children. He/she 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