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Male Orville Sprague Dewey Click to view Orville Sprague Dewey in the family tree

Orville Sprague was born on April 8th, 1844 in Boston, MA.1   Orville Sprague's father was Solon William Dewey and his mother was Ann Elizabeth Sprague.  His paternal grandparents were William Phelps Dewey and Abigail Campbell. He had two brothers named Solon William and Arthur Waldo.  He was the second oldest of the three children.  He died at the age of 25 on January 24th, 1870 in Boston, MA, age25.1 

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