Son of Kenneth; fair one
Mckenzey is a modern American spelling variation of the Scottish surname Mackenzie. It derives from the Gaelic 'Mac Coinnich', meaning 'son of Coinneach', which translates to 'fair' or 'handsome'.
Less common today
Mckenzey isn't in the latest US Top 1000. It last peaked at #7,872 in 2003.
US births per 5-year period, 1990βpresent (SSA data).