High Quality Content by WIKIPEDIA articles! Charles F. Goldfarb is known as the father of SGML and is a co-inventor of the concept of markup languages. In 1969 Charles Goldfarb, leading a small team at IBM, developed the first markup language, called Generalized Markup Language, or GML. In an interview with Web Techniques Magazine editor Michael Floyd, Dr. Goldfarb explains that he coined the term GML to be an initialism for the three researchers, Charles Goldfarb, Ed Mosher and Ray Lorie who worked on the project.