Irwin households in mid-nineteenth century Ireland

Household numbers by county in Griffith's (1847-64), as on the map

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Surname Dictionary

Ervine numerous: E Ulster etc. Two separate names, but see Irvine & Irwin.
Irvine Very numerous: Antrim, Belfast, Ulster generally, Dublin etc. Scottish, 17 cent in Ulster. An Sloinnteoir Gaeilge gives Ó h-Eireamhóin as Irish version. In Scotland the name is usually Irving, a toponymic. SI & SS.
Irving fairly rare: Dublin etc. See Irvine.
Irwin Very numerous: all areas, especially Ulster. Moderate numbers in S Limerick and E Cork. Ir. O h-Eireamhóin & Ó Ciarmhacáin (SGG). However, MacLysaght considers the name is generally of settler origin, either a synonym of Irvine or from an English first name.
Ó h-Eireamhóin Irwin: bhí an chlann sa in Uí Fhailí anallód ach dealraíonn sé gur sloinnte gallda Irwin agus Irvine de ghnáth. Duine de shinsear na nGael a b'ea Eireamhón cosúil le Ír agus Éimhear. Bhí an t-ainm i bhfeidhm ag muintir Mhic Shuibhne go dtí le déanaí.
Orwin Very rare: Belfast area. English, from Anglo-Saxon first name "boar-friend". See Erwin.


  • Irwin in 1659.
  • Irwin births mapped 1864-1913
  • Irwin 1901 census map
  • Irwin 1911 census map
  • Irwin Roman Catholic baptisms
  • Irwin Roman Catholic marriages NEW!

The surname

  • Irwin
    Cavan/ Canada

Parishes where Irwin and a second surname are found together


Variants in Griffith's
& total households

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Non-Griffith's Variants

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