Last name origins & meanings:
- English: occupational name for a sexton or churchwarden, from
Middle English sexteyn ‘sexton’ (Old French secrestein,
from Latin sacristanus).
- Irish (Munster and midlands): reduced Anglicized form of Gaelic Ó Seastnáin ‘descendant
of Seastnán, Seasnán’, a personal name meaning
‘bodyguard’, from seasuighim ‘to resist’, ‘to defend’.
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