Glackin

Glackin is a surname of Irish origin. It is a variant of the name O'Glackin, derived from the Gaelic "Ó Glaisín," meaning "descendant of Glaisín." The given name Glaisín is a diminutive of "glas," meaning "green" or "grey," possibly referring to someone with green or grey eyes, or someone who lived near a green area.

The Glackin family is historically associated with County Donegal in Ireland. Records of the name can also be found in other parts of Ireland, and in countries where Irish immigrants settled, such as the United States, Canada, and Australia.

Variations in spelling include Glacken, Glassin, and occasionally other less common forms.

The name, like many Irish surnames, experienced Anglicization over time, leading to the different spellings found today. Genealogical research can be useful in tracing the history of individuals and families bearing the Glackin surname.