Word Study
o'
CIDE DICTIONARY
o', [Ir. o a descendant.].
A prefix to Irish family names, which signifies grandson or descendant of, and is a character of dignity; as, O'Neil, O'Carrol. [1913 Webster]
o', prep.
A shortened form of of or on . Shak. [1913 Webster]
OXFORD DICTIONARY
o', prefix of Irish patronymic names (O'Connor).
Etymology
Ir. {oacute}, ua, descendant
o', prep. of, on (esp. in phrases: o'clock; will-o'-the-wisp).
Etymology
abbr.
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