Cognomen Dónaill (Dónaill 
) , in all the world, is a very rare family name. The family name Dónaill is habitual in Northern Europe, particularly Ireland, where it is a rare surname.
| niall ó dónaill Irish lexicographer, IE (b. 1908) |
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| éamonn ó dónaill IE |
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| aodh mac dónaill |
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| seán ó dónaill Irish hurler, IE (b. 1994) |
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