Cognomen Millhouse (Millhouse 
) , around the globe, is quite a rare last name. The last name Millhouse is habitual in Andorra, where it is quite a rare surname, Australia, and the United States, where it is a rare surname. Measured by absolute frequency, it is commonest in the United States, Australia, and the United Kingdom.
| VARIANT | COUNTRY |
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| Millhouse | Australia, Canada, France, United States, United Kingdom |
| robert millhouse poet (b. 1788) |
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| algy millhouse Australian rules footballer, AU (b. 1887) |
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| eric millhouse Australian lawyer, AU (b. 1891) |
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| vivian millhouse Australian judge (1902-1963), AU (b. 1902) |
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| robin rhodes millhouse Australian judge and politician, AU (b. 1929) |
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| margaret millhouse researcher |
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| barbara babcock millhouse American museum professional |
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| ann millhouse (died 1765) |
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| richard millhouse Peerage person ID=458914 |
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| ambrit millhouse actor |
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| carmel millhouse Australian actor |
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| madison ge millhouse researcher (ORCID 0000-0002-2358-5203) |
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