Cognomen Mcalester (Mcalester 
) , globally, is a rare last name. The cognomen Mcalester is habitual in Ireland, where it is a rare surname, the United States, where it is a very rare surname, and Australia. In absolute terms, it is the most numerous in the United States, Ireland, and the United Kingdom. Much less frequently, Mcalester is the forename as well as the last name.
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| Mcalester | United Kingdom, Australia, Ireland, United States, Canada |
| charles godfrey mcalester Scottish clan chief (b. 1765) |
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j. j. mcalester American politician (1842-1920), US (b. 1842) |
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| william henry somerville mcalester (1871-1927) (b. 1871) |
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| angus james jervis somerville mcalester (1907-1990) (b. 1907) |
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| arcie lee mcalester American geologist (1933-2016), US (b. 1933) |
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| virginia savage mcalester American architectural historian, US (b. 1943) |
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| charles godfrey somerville mcalester (born 1948) (b. 1948) |
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| william st. john somerville mcalester of loup and kennox (born 1958) (b. 1958) |
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| marion neyne mcalester accused of witchcraft, GB |
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| mary mcalester Peerage person ID=502007 |
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| enid wilhemina somerville mcalester Peerage person ID=502008 |
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| violet wilhemina somerville mcalester Peerage person ID=502010 |
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| robert mcalester Peerage person ID=639516 |
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| ian mcalester Peerage person ID=502006 |
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| keely anne somerville mcalester (born 1992) (b. 1992) |
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