When you hear the name Keira, you probably think of actress Keira Knightley. And rightly so. Her first name, which didn’t follow the original Kiera spelling, rose in popularity with her rise to movie fame in the early 2000s. The name is the anglicized version of the Irish name Ciara, which comes from the Gaelic Ciarán or Kieran, which in turn is derived from “ciar” (“dark, black”).
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Source: Social Security Administration
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