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Last name origins & meanings:

  1. Cornish: habitational name from a minor place named Kellow, from Cornish kellow, plural of kelli ‘wood’, ‘grove’.
  2. English: habitational name from Kelloe in Durham, named from Old English celf ‘calf’ + hlāw ‘hill’.
  3. Scottish: from the lands of Kelloe in Berwickshire, or in some cases possibly a variant of Kellogg.