All over the world, Fridericus (Frederico 
, فريدريك 
, Фредрик 
) is a common boy's given name. The forename Fridericus is habitual in Portugal, where it is quite a common male name, Brazil, and Cabo Verde. Measured by absolute frequency, it is commonest in Brazil, Portugal, and Angola. Very seldom, Fridericus is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Frederico | Philippines, Mozambique, Portugal, Brazil, Angola |
| فريدريك | Iraq, Palestinian Territory, Iran |
| Фредрик | Russia, Ukraine, Armenia |
| Fridericus | Germany |
Fridericus is also a prevalent name for the fictitious and mythical characters: Fred Flintstone , the cartoon character, The Flintstones; Captain Marvel Jr. , the fictional character, Shazam!; Blob , the fictional character in Marvel Comics, Uncanny X-Men; Tito , the character from Oliver & Company and Fredo Corleone , the fictional character from The Godfather series, and in many other works.
| fridericus de amberg (1350-1432), DE (b. 1350) |
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| fridericus amann German mathematician and astronomer, DE (b. 1400) |
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| fridericus eggeling 1579-1651; Fürstl. Braunschweig.-Lüneburg. Kanzlei-Gerichts-Sekretär (b. 1579) |
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| fridericus berghius (b. 1576) |
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| fridericus a borschnitz (b. 1579) |
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| fridericus lepnerus 1601-1664; Beamter in Königsberg (b. 1601) |
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| fridericus blank (b. 1598) |
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| fridericus ragstadt van weile (b. 1648) |
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| fridericus pable CZ (b. 1649) |
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| fridericus falzeder (b. 1689) |
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| fridericus christianus borgmeyer pastor (b. 1699) |
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| fridericus von pfutschner Roman Catholic bishop (b. 1705) |
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| fridericus lupichius (b. 1717) |
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| fridericus christianus friccius DE (b. 1733) |
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| fridericus collin (b. 1743) |
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