From Ó Dubhghaill, ‘dark foreigner’ — a name born from Ireland's long entanglement with Viking Dublin.
Norse-Gaelic Origin · Root meaning ‘dark stranger’
Doyle comes from dubh (‘dark’) and gall (‘foreigner’) — the term Gaelic Ireland used for Danish Vikings, distinguishing them from the ‘fair foreigners’, the Norwegians. Strongest in Wexford and Leinster, it's a rare surname that names an entire people rather than one man.
A name born of invasion that a Gaelic family chose to carry forward as their own — proof that Ireland absorbed its Norsemen as thoroughly as it later absorbed the Normans.
Irish form: Ó Dubhghaill