Martin O'Neill is a former professional football player and a well-known football manager from Northern Ireland. He was born on March 1, 1952, in Kilrea, County Londonderry. O'Neill played as a midfielder for clubs like Norwich City and Manchester City before transitioning to management. As a manager, O'Neill has led several teams, including Celtic, Aston Villa, and the Republic of Ireland national team. He is recognized for his tactical acumen and ability to motivate players. O'Neill has achieved notable success, including winning the Scottish Premier League and reaching the UEFA Cup final with Celtic.