Cosgrave — Irish Surname Origin & Meaning
Irish form: Mac Coscraigh
Meaning: 'son of Coscrach, meaning victorious'
Traditional stronghold: Dublin, Meath
Pronunciation: KOZ-grayv; Irish Mac Coscraigh: mahk KOS-krig
History of the Cosgrave name
Mac Coscraigh, from coscrach meaning 'victorious' or 'triumphant', named a sept associated chiefly with County Meath and the surrounding midland/east-coast area, a fitting origin given the name's later association with 20th-century Irish political leadership. The family remained a modest, locally established group through the medieval period rather than a major ruling dynasty. Anglicisation produced the modern form Cosgrave, occasionally rendered Cosgrove, and the surname became especially prominent nationally through William T. Cosgrave, first head of government of the Irish Free State, and his son Liam Cosgrave, later Taoiseach, giving the name outsized visibility in modern Irish history relative to its originally modest regional base in Meath and Dublin.
Variants: Cosgrove · MacCosgrave
Famous bearers of the name
- W. T. Cosgrave — first President of the Executive Council of the Irish Free State
- Liam Cosgrave — Taoiseach of Ireland, son of W. T. Cosgrave
- Niamh Cosgrave — Irish sportsperson
- Stephen Cosgrave — Irish businessman
Related names from the same part of Ireland: Kelly · Byrne · Casey · Plunkett · Cusack · Dillon · Harte · Carolan