Surname Mcdade (Mcdade 
, Mac Daibhéid, مكداد) , throughout the world, is quite a common family name. The family name Mcdade is habitual in Northern Europe, particularly Guernsey, where it is quite a common surname, the United Kingdom, where it is quite a rare surname, and Ireland. In absolute terms, it most frequently occurs in the United States, the United Kingdom, and Australia.
| VARIANT | COUNTRY |
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| Mcdade | United Kingdom, Australia, Ireland, United States, Canada |
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joseph m. mcdade American politician, US (b. 1931) |
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| george manning mcdade Canadian politician, CA (b. 1893) |
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| alex mcdade British political commissar (b. 1905) |
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| thomas m. mcdade American lawyer (b. 1907) |
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| robert mcdade American military personnel, US (b. 1922) |
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wayne mcdade New Zealand rugby league footballer, NZ (b. 1981) |
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aubrey mcdade United States Marine, Navy Cross recipient, US (b. 1985) |
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| joe billy mcdade African-American judge; former basketball player, US (b. 1937) |
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| james mcdade Member of the IRA, GB (b. 1946) |
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| lucinda a. mcdade American botanist and curator (1953— ), US (b. 1953) |
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| steven mcdade (b. 1950) |
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| sandy mcdade Scottish actress, GB (b. 1964) |
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| von mcdade American basketball player, US (b. 1967) |
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| jeremiah mcdade Canadian musician, CA (b. 1977) |
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| william mcdade researcher |
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