Earney is of Irish origin, derived from the ancient Gaelic personal name "Éamann" or "Eamonn". It was popularized through its association with the legendary High King of Ireland, Érimón mac Cairill, who ruled in the 2nd century AD. The name Earney, also spelled Ernin or Erney, is considered a variant form of Éamonn and shares its meaning: "universal" or "all-encompassing". This name was brought to other parts of the world through Irish emigration and has since become somewhat more common outside Ireland than within it.
"The name Earney experienced peak popularity between 1915 and 1932, with a total of 49 babies named Earney born over this period."