Marion Lawrence Ellzey, Jr. was born April 13, 1939 in Shattuck, Oklahoma, the son of Mary Frances Scogin Ellzey and Marion Lawrence Ellzey. His father was a stock farmer. He attended the public school system in Perryton, Texas, and graduated from Perryton High School in 1957. In that year he received a National Merit Scholarship and entered Rice University. During the summers of 1958, 1959, and 1960, he worked as a student employee in the Research and Development Division of Texas Instruments, Inc., Dallas, Texas. In June, 1961, he graduated from Rice University with a BA in physics, and entered the University of Texas in September, 1961. He had several assistantships at the University of Texas, including Teaching Assistant in physics during the 1965-66 term. He held a R. A. Welch Fellowship in 1964-65, and 1965-66. He was a member of Sigma Pi Sigma physics honorary society.
Marion L. Ellzey received his PhD in physics in 1966. The title of his dissertation was "Finite Group Algebra with Examples." His supervising professor was Albert Matsen who was in both the chemistry and phyics departments. Marion's office was in the chemistry building. Following his PhD he stayed at UT for a couple of years as a postdoc. In 1968, he went to the University of Texas at El Paso with an appointment in chemistry and math. UTEP was just beginning to become a quality regional university. His research interest was group theoretic methods for problems in physics and chemistry.
In 1969, Marion married Joanne Charlotte Tontz in Travis County, Texas.
Marion retired in 2014 and he became an Emeritus Professor of Chemistry.