Elo, Arpad Emrick
Arpad Elo (1903-1992) was born in Egyhazaskeszo, Hungary, he moved to the United States with his parents in 1913. He played in 37 consecutive state championships in Wisconsin, from 1933 to 1969, winning the title 7 times (1935, 1937, 1940, 1941, 1945, 1950, and 1961). He was a professor of physics and astronomy at Marquette University in Milwaukee for 30 years (1935 to 1965) and president (1935-1937) of the American Chess Federation before it merged and came part of the U.S. Chess Federation (USCF) in 1939. He is considered the father of scientific chess ratings and his Elo rating system was adopted by the USCF in 1960 and by FIDE in 1970. The original chess rating system was developed by Kenneth Harkness in 1950. He died of a heart attack in 1992 in Milwaukee at the age of 89.