Curran, together with its many variants - (O')Curren, Corhen, Currane, Curreen etc. - may come from the Irish Ó Corraidhin, or Ó Corrain, both deriving from corradh, meaning "spear". The former version arose in Co. Donegal, where it still remains very numerous, while the latter was the name of several independent septs living in south Leinster/Waterford, Kerry, Galway and Leitrim. Today, the heaviest concentration of the name is found in Ulster, with the smallest number in Connacht, but the name is numerous and widespread throughout Ireland. Its most famous bearers were John Philpot Curran (1750-1817), the barrister and nationalist, and his daughter Sarah, who was secretly engaged to Robert Emmett. Thomas Moore's song "She is Far From the Land" was inspired by her story.

Curran households by county in the Primary Valuation property survey of 1848-64.
Click on a county name for a parish breakdown(paying).
Antrim 11
Armagh 43
Belfast city 21
Carlow 63
Cavan 33
Clare 7
Cork 41
Cork city 3
Derry 13
Donegal 145
Down 94
Dublin 35
Dublin city 17
Fermanagh 23
Galway 144
Kerry 51
Kildare 36
Kilkenny 69
Laois 51
Leitrim 67
Limerick 2
Limerick city 3
Longford 19
Louth 31
Mayo 33
Meath 45
Monaghan 16
Offaly 9
Roscommon 10
Sligo 7
Tipperary 11
Tyrone 71
Waterford 74
Westmeath 21
Wexford 62
Wicklow 15