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Male Moses Leonard Click to view Moses Leonard in the family tree

Moses was born on July 2nd, 1749 in Springfield, MA.1   Moses' father was Moses Leonard and his mother was Constant Dewey.  His maternal grandparents were Israel Dewey and Sarah Root. He had a brother and three sisters, and also a sibling of unknown gender, named Moses, Constant, Mary, Huldah and Phineas.  He was the second oldest of the six children.  He died at the age of 8 on October 10th, 1757 in Springfield, MA.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