The Free On-line Dictionary of Computing (30 December 2018):
Guy Lewis Steele, Jr.
(GLS) A software engineer whose most notable
contributions to the art of computing include the design of
Scheme (in cooperation with Gerald Sussman) and the design
of the original command set of Emacs. He is also known for
his contribution to the Jargon File and for being the first
to port TeX (from WAITS to ITS). He wrote the book
"Common Lisp", which virtually defines the language.
He was working at Sun Microsystems, Inc. from 1996 to the
present (June 2001).