Monaghan retired from inter-county football after the 1978 championship, while a knee ligament injury brought his club football career to an end in 1984.
Monaghan | County Monaghan | Dónal Lunny | Donal Logue | Monaghan GAA | E. Jennifer Monaghan | Dominic Monaghan | Tom Monaghan | Dublin and Monaghan Bombings | Dublin and Monaghan bombings | Donal Hord | Marjorie Monaghan | Henry Westenra (County Monaghan MP) | Donal Skehan | Dónal P O'Mathúna | Donal O'Mathuna | Donal Óg Cusack | Donal Lunny | Donal Leahy | Donal Coonan | Donal Cam O'Sullivan Beare | Cavan–Monaghan (Dáil Éireann constituency) | Cavan–Monaghan | Bradley (left) and Monaghan's Dermot McArdle in action in the 2009 All-Ireland Senior Football Championship |