Meaning:Servant of Saint John
Meaning “servant of Saint John" Gillen is a boy's name of Irish origin. It's derived from the Gaelic surnames Mac Giolla Fhionnáin and Mag Ualghairg. It has variations inlcuding Gillan, Gillean, and Gillin. If you want to honor an Irish connection, Gillen is a name with a  rich spiritual heritage. It's primarily found in Ireland and Scotland, reflecting the historical connection between these regions.
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