Surname Mcdowall (Mcdowall 
, מקדואל 
) , in the world, is quite a common cognomen. The surname Mcdowall is habitual in Saint Vincent and the Grenadines, where it is quite a common surname, Guernsey, and Bahamas, where it is quite a rare surname. Not in comparison with a country's population, the name is most common in the United Kingdom, the United States, and Australia.
| william mcdowall UK politician (1719–1784) (b. 1719) |
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| william mcdowall Scottish politician, died 1810 (b. 1749) |
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| james mcdowall (b. 1752) |
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| robert james mcdowall (b. 1768) |
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| elizabeth mcdowall (b. 1780) |
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| john r. mcdowall (b. 1801) |
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| william mcdowall Scottish newspaper editor and antiquarian (b. 1815) |
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| robert mcdowall Australian cricketer (1821-1894), AU (b. 1821) |
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| andrew mcdowall Girls' Public Day School Trust Secretary (b. 1839) |
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| william mcdowall (b. 1847) |
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| charles mcdowall politician of Western Australia, AU (b. 1862) |
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roddy mcdowall British actor (1928–1998), GB (b. 1928) |
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| valentine mcdowall (1881-1957) medical practitioner and wireless and television pioneer (b. 1881) |
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| john kevan mcdowall Scottish politician (b. 1891) |
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| robert john stewart mcdowall (1892-1990), Medical Professor of Physiology (b. 1892) |
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