From Ó Maolruanaidh, ‘devotee of Ruanadh’ — a County Clare name sharing its root personal name with Rooney further north.
The Moroney certificate.
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Gaelic Origin · Root meaning ‘devotee of Ruanadh’
Moroney anglicises Ó Maolruanaidh, joining maol (‘devotee’, ‘tonsured one’) with the personal name Ruanadh — the same root borne, without the maol prefix, by the northern name Rooney. The family were established in County Clare, closely tied to church lands around Killaloe.
One root, two very different-sounding surnames — proof that a small prefix can carry a family hundreds of miles and centuries apart in how their name is heard today.
Irish form: Ó Maolruanaidh
