Last name origins & meanings:
- Irish: reduced form of McGahan, an Anglicized form of
Gaelic Mac Eacháin, ‘son of Eachán’.
- Irish: in
Leinster, a reduced Anglicized form of Gaelic Ó Gaoithin
‘descendant of Gaoithín’, a personal name from a diminutive
of gaoth, an adjective meaning ‘wise’ (probably the sense here)
or a noun meaning ‘wind’; hence in Connacht the name is sometimes
‘translated’ as Wynne or Wyndham. Occasionally it may be
an Anglicized form of Mac Gaoithín ‘son of
Gaoithín’, although this is more commonly found as
McGeehan, an Ulster name.
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