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

Cyrennius was born on November 23rd, 1749 in Suffield, CT.1   Cyrennius' father was David Dewey and his/her mother was Hannah Hall.  His/her paternal grandparents were John Dewey and Mary Thomas; his/her maternal grandfather was Nathaniel Hall. He/she had two brothers and two sisters, named John, David, Hannah and Rhoda.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