Cognomen Mcdonagh (Mcdonagh 
, מקדונה 
) , all over the world, is a common surname. The cognomen Mcdonagh is characteristic of Ireland, where it is quite a common surname, the United Kingdom, where it is quite a rare surname, and Australia. Measured by absolute frequency, it is commonest in Ireland, the United Kingdom, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Mcdonagh | Australia, Ireland, Canada, United States, United Kingdom |
| מקדונה | Israel |
| mary mcdonagh Irish poet, IE (b. 1849) |
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| francis mcdonagh (b. 1839) |
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phyllis mcdonagh Australian film producer (b. 1900) |
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paulette mcdonagh Australian film director, AU (b. 1901) |
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bill mcdonagh former professional ice hockey player, CA (b. 1928) |
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| james radclyffe mcdonagh British surgeon (1881-1965), GB (b. 1881) |
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| john mcdonagh South African cricketer, ZA (b. 1892) |
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| maitland mcdonagh American film critic, US (b. 1901) |
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jim mcdonagh Ireland international footballer, IE (b. 1952) |
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philip mcdonagh Irish diplomat and poet, IE (b. 1952) |
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| myles mcdonagh boxer (b. 1905) |
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| patrick mcdonagh Scottish footballer (1906-2015), GB (b. 1906) |
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siobhain mcdonagh British politician (born 1960), GB (b. 1960) |
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| jack mcdonagh Australian rules footballer, AU (b. 1914) |
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john michael mcdonagh British film director and screenwriter, GB (b. 1967) |
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