which Northern Irish professional footballer  was part of Manchester United United Trinity or the Holy Trinity
United Trinity In association football, the United Trinity or the Holy Trinity refers to the Manchester United trio of George Best, Denis Law, and Sir Bobby Charlton, who helped United become the first ever English club team to win the European Cup in 1968.
Hugh Ferguson (footballer) Hugh Ferguson (1926–1994) was a Northern Irish professional footballer who played as a full back.