Thomas Gresham

Sir Thomas Gresham (c. 1519 – 21 November 1579), (Thomas Gresham the Elder), was an English merchant and financier who worked for King Edward VI (1547-1553) and for Edward's half-sisters, Queens Mary I (1553-1558) and Elizabeth I (1558-1603). In 1565 he founded the Royal Exchange in the City of London.

More information on the Wikipedia page.