Our Families


The surname Casey is an Anglicized version of the Irish Gaelic name Ó Cathasaigh, meaning 'descendant of Cathasach'. The given name Cathasach means 'vigilant' or 'watchful'. This surname originated in Ireland where it is quite widespread, with several distinct septs; the most notable are found in counties Dublin, Cork, and Limerick. Over time, members of the Casey family migrated to various countries, leading to a spread of the surname internationally.