Last name Fialho (Fialho 
) , globally, is a common cognomen. The family name Fialho is characteristic of Portugal, where it is quite a common surname, Brazil, and Angola, where it is quite a rare surname.
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| Fialho | Portugal, Brazil, United States, India, Angola |
| josé fialho Portuguese archbishop and prelate, PT (b. 1673) |
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luísa fialho Portuguese stage actress, PT (b. 1839) |
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fialho de almeida Portuguese writer and journalist (1857-1911), PT (b. 1857) |
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| josé antônio de abreu fialho (b. 1874) |
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| amadeu da silva fialho BR (b. 1889) |
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| argemiro de arruda fialho Brazilian politician, BR (b. 1908) |
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| sylvio de abreu fialho (b. 1904) |
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| francisco fialho Brazilian physician, BR (b. 1918) |
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| alvaro fialho (b. 1914) |
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bruno fialho Portuguese politician, PT |
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| fialho gouveia Portuguese television presenter, PT (b. 1935) |
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| vicente fialho Brazilian politician, BR (b. 1938) |
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| maria fialho (b. 1946) |
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| fialho isaac politician, PT (b. 1960) |
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| tavinho fialho Brazilian musician (1960-1993), BR (b. 1960) |
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