Education
Queen's University Belfast.
Queen's University Belfast.
He is regarded as one of the greatest players of all-time. O'Neill is regarded as one of Gaelic football's outstanding forwards, scoring 85 goals and over 500 points for Down senior football team, and was a major figure in the county’s All-Ireland victories of 1960, 1961 and 1968. Other honours include a Sigerson Cup medal with the Queen's University of Belfast in 1958, whom he later coached to further wins.
He played club football with John Mitchel GFC Newry, winning the Down Senior Football Championship in 1960, 1964, 1967 and 1968. O'Neill was the Down minor team coach, winning the 1977 All-Ireland Minor Football Championship. Sean coached the Queen's University Belfast senior team in the early 1980s.
In 1984, the Gaelic Athletic Association centenary year he was honoured by being named on their Football Team of the Century. In 2000 he was again honoured by the GAA by being named on their Gaelic Football Team of the Millennium. O'Neill is a solicitor by profession.
Honours Railway Cup (8) 1960 1963 1964 1965 1966 1968 1970 1971.
He played Gaelic football with his local club John Mitchel and was a member of the Down senior inter-county team from the 1950s until the 1960s.