John Napier

lived from 1550 to 1617

John Napier was a Scottish scholar who is best known for his invention of logarithms, but other mathematical contributions include a mnemonic for formulas used in solving spherical triangles and two formulas known as Napier's analogies.

Find out more at:
http://www-history.mcs.st-andrews.ac.uk/Mathematicians/Napier.html