Updated June 9, 2019

Find Baby Names

Boy name origins & meanings

  • Greek : Beaver

Boy name variations

Castor

Castor

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Masculine
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Caster

Caster

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Masculine
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Castorio

Castorio

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Masculine
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Kaster

Kaster

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Masculine
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Family name origins & meanings

  • German : from the Roman personal name Castor (meaning ‘beaver’). It was the name of the patron saint of Koblenz, a 4th century priest and missionary who worked in the area of the Mosel.