It comes from the Irish name Muineachán which comes from a diminutive plural form of the Irish word muine meaning "brake" (a, thickly overgrown area) or sometimes "hillock". It is sometimes interpreted as the land of the little hills, a reference to the numerous drumlins in the area, what are small hills.
Patrick Kavanagh.
Monaghan is found in the Irish counties of Galway, Mayo and Fermanagh, but originated in Co. Roscommon. The Irish form of the surname is Ó Manacháin. It derives from Manachán (a monk). The Irish county name Monaghan has no connexion with this name as it is from Muineachán.
It is widespread in Ireland but the most common name in Co. Monaghan.
Aaron Monaghan was born in 1980, in Co. Cavan, Ireland.
Billy Monaghan's birth name is William Monaghan.
Cameron Monaghan's birth name is Cameron Riley Monaghan.
Michelle Monaghan's birth name is Michelle Lynn Monaghan.
Dominic Monaghan's birth name is Dominic Bernard Patrick Luke Monaghan.
Francis Taaffe was born on September 12, 1970, in Monaghan, Co. Monaghan, Ireland.
Between Kells and Monaghan town it is about 48 miles or 76 kilometres.
Laurence de Monaghan's birth name is Laurence Mahon de Monaghan.
Dominic Bernard Patrick Luke Monaghan