McGeown is a surname of Irish provenance, derived from the Gaelic patronym Mac Eoghan meaning “son of Eoghan.” The personal name Eoghan translates literally as “born of the yew tree” and is historically associated with the Irish lineage of the Eoghan families.
The name McGeown is a variant of MacKeown, itself an Anglicised form of the Gaelic MacEoghain or MacEoin. The prefix Mac denotes “son of,” while the personal element Eogann is generally recognised as a Gaelic form of the Latin Eugenius, itself derived from the Greek Eugenios meaning “well‑born, noble.” Rarely, a previous belief identified it as a form of John, but contemporary scholarship favours the connection to Eugenius.
There are seventeen recognised variants and synonyms of the surname, including Magone, MacCune, MacKone, and MacEwen. The principal sept associated with these forms was situated in North Connacht, with a secondary branch in Galway; however, the forms McGeown and McGeon are largely confined to the Oriel counties of Armagh, Monaghan, and parts of south Down.
Early documentary evidence of the name appears in Scottish records, which are more exhaustive than contemporary Irish sources. A record of Gilpatrik mac Ewen appears in 1219 in the Register of the Abbey of Arbroath. Earlier still, the name is recorded as Malcolm MacEwen in 1174 in the Book of the Priory of St. Andrew's, a chronicled document from the reign of King William “The Lion” of Scotland (1165–1214). A later parish entry from 1819 notes the christening of Isabella, daughter of Joseph and Ann McGeown, at Aghalee in Antrim.
In modern times the surname remains predominantly associated with families of Irish heritage in Northern Ireland. The concentration in the counties of Armagh, Monaghan, and south Down reflects the historical settlement patterns of the Oriel sept and its close kin.
Although spelling variations exist, the core elements of the name – the patronymic Mac and the personal name Eoghan – persist, underscoring the enduring Gaelic identity embedded within the surname McGeown.