Background
O'Holleran, Dennis Collins was born on September 23, 1946 in Hebron, Illinois, United States. Son of Daniel Collins O'Holleran and Phyllis Jean Newer.
O'Holleran, Dennis Collins was born on September 23, 1946 in Hebron, Illinois, United States. Son of Daniel Collins O'Holleran and Phyllis Jean Newer.
Bachelor, Milton (Wisconsin) U., 1969; Master of Science, United States Sports Academy, Daphne, Alabama, 1989.
Teacher, McHenry (Illinois) Catholic Schools, 1969-1971;
teacher, Transfiguration School, Wauconda, Illinois, 1972-1977;
teacher, Marengo-Union (Illinois) Schools, 1977-1992;
salesperson sporting goods, Sports-O's Sporting Goods, Woodstock, Illinois, since 1992. Athletic director Montini School, McHenry, 1970-1971, Union School, 1981-1985. President Fox Valley Sports Council, 1975-1983.
Play director Union School, 1978-1986. Basketball coach Montini School, McHenry, 1970-1971, Transfiguration, Wauconda, 1972-1978, Union and Marengo School, 1980-1985, 87-90.
Officer, coach Burton Richmond (Illinois) Little League, 1967-1974. Coach Island Lake Wauconda Youth Baseball, 1975-1992, field director PONY baseball, since 1992. President Wauconda Youth Baseball, 1977-1982, St. Joseph's Church Council, Richmond, 1972.
Commissioner Fox Valley Boys Baseball, 1979-1992. Head coach Lakes Junior Football Wauconda-Island Lake, 1985-1991. Baseball chairman Elgin Area Officers Association, since 1988.
Member Illinois High School Association Officials, Marengo Area Education Association (president 1987-1988), Lake Youth Athletic Association (officer since 1984).