O'SHANNESSEY

Patronymic

Meaning

Descendant of Seannach, meaning 'old' or 'ancient'.

Etymology

Irish patronymic from Ó Seannacháin or similar forms, derived from the personal name Seannach. The name underwent anglicization with the addition of the English suffix '-ey'.

About the O'SHANNESSEY Surname

An Irish surname with roots in Gaelic patronymic tradition, derived from Ó Seannacháin. This spelling represents a less common anglicized variant of the more established O'Shaughnessy.

Distribution & Frequency

Estimated 5,000 bearers in the United States #1,656 most common surname
Rare Common

Primarily Ireland, particularly in Munster region.

O'SHANNESSEY Surname Distribution

Geographic distribution based on Civil War military records.

Fewer
More

Notable Bearers

Variant of O'Shaughnessy; specific bearers of this spelling are less documented

People with the O'SHANNESSEY Surname

G.f. O'shannessey

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