GUMMERE, John, educator, born in Willow Grove, Pennsylvania, in 1784; died in Burlington, New Jersey, 31 May, 1845. For more than forty years he was a successful teacher in the towns of Burlington, New Jersey, Horsham, Pennsylvania, Rancocus, New Jersey, and Westtown, Pennsylvania, and conducted with his son, Samuel J., a boarding school in Burlington. In 1833-'43 he was professor of mathematics, and part of the time principal, of the Friends' college at Haverford. He then returned to the Burlington academy, where he remained until his death. He became a member of the American philosophical society in 1814, and in 1825 was given the degree of M. A. by Princeton. A memorial of his life was printed for private circulation by W. J. Allinson (Burlington, New Jersey, 1845). He published "A Treatise on Surveying" (New York, 1814), and "An Elementary Treatise on Theoretical and Practical Astronomy" (1822).--His brother, Samuel R., educator, born in Horsham, Pennsylvania, 3 March, 1789; died in Burlington, New Jersey, 13 September, 1866, was the principal of a boarding school for girls at Burlington from 1821 till 1837, and was known as a successful teacher. In 1840-'50 he was clerk of the chancery court of New Jersey. He published "Treatise on Geography" (Philadelphia, 1817); "A Revision of the Progressive Spelling-Book" (1831); and a "Compendium of Elocution" (1857).