Last name Daddario (Daddario 
) , all around the world, is quite a rare family name. The surname Daddario is characteristic of Italy, where it is a rare surname, the United States, and Argentina.
| VARIANT | COUNTRY |
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| Daddario | Italy, United States, Argentina, Canada, Brazil |
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emilio q. daddario American politician (1918–2010), US (b. 1918) |
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alexandra daddario American actress, US (b. 1986) |
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matthew daddario American actor, US (b. 1987) |
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| richard daddario American law enforcement officer (b. 1951) |
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| grazia daddario Italian actor, IT |
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| catharine daddario sister of Alexandra Daddario, US (b. 1992) |
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