About John Robert Gregg
John Robert Gregg was an Irish-born American educator, publisher, and inventor, best known as the creator of the eponymous shorthand writing system, Gregg shorthand. Developed in the late 19th century and refined over several decades, Gregg shorthand became one of the most widely used systems of shorthand in the English-speaking world, particularly in business and educational settings during the 20th century.
Biography source:
Wikipedia