Keiran is a diminutive of Kier. Kier originates in Irish language and is derived from the name Ciar, which means "small dark one". As a masculine given name it has always been much more popular in the United Kingdom than the United States.
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Keiran is a diminutive of Kier. Kier originates in Irish language and is derived from the name Ciar, which means "small dark one". As a masculine given name it has always been much more popular in the United Kingdom than the United States.