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Stockwell, John Nelson; astronomical mathematician; born, Northampton, Mass., April 10, 1832; son of William and Clarissa (Whittemore) Stockwell; educated, common schools, Brecksville, 0.; (hon. A. M., 1862, Ph. D., 1876, Western Reserve); married Sarah Healy, of Brecksville, 0., Dec. 6, 1855; known for original investigations in astronomy. Author: Memoir on the Secular Variations of the Planetary Orits, in Smithsonian Contributions to Knowledge, 1872; Stock and Interest Tables, 1873; Tax Tables, 1903; Eclipse-Cycles; Theory of the Mutual Perturbations of Planets Moving at the Same Mean Distance from the Sun, and Its Bearing on the Constitution of Saturn’s Rings and the Cosmogony of Laplace. Contributor American and foreign scientific journals.