In English, name Gannon means – Speannan.. Other origins for name Gannon include – English, Irish, Irish, Gaelic. Name Gannon is most often used as a boy name or male name.
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In English, name Gannon means – Speannan.. Other origins for name Gannon include – English, Irish, Irish, Gaelic. Name Gannon is most often used as a boy name or male name.