Sharp, Abraham, a schoolmaster of Liverpool, and subsequent bookkeeper in London, whose wide knowledge of mathematics, astronomy, &c., attracted Flamsteed (q.v.), by whom he was invited in 1688 to enter the Greenwich Royal Observatory, where he did notable work, improving instruments, and showing great skill as a calculator; published “Geometry Improved,” logarithmic tables, &c. (1651‒1742).
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Sharon * Sharp, Becky