Origin of the name Lucas:
An Ecclesiastic Late Latin name thought to be a derivative of Lucius, which is from the root lux (light). Alternatively, some believe the name is derived from the Ecclesiastic Greek Loukas, a contraction of Loukanos (man from Lucania).
From A World of Baby Names by Teresa Norman. Buy the bookDoes Lucus sound...
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As a name, Lucus is an obscure variant of Lucas or Lucius. In Latin, it is a separate word meaning "sacred grove."
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