I have been researching the origin of the Kizzia name, I'm having a lot of trouble finding any reference to it, except that my mother told me the Kizzia, Kizziah, Kizziar's are of Scottish/Irish decent, which fits right in to the English because of the history of those countries. I did, just find today, that because of spelling, pronounciation, etc., that the original name O'Casey, was often found as Kesye or Keysey, which in turn could be read as Kizzia. I thought that very interesting. Not verified as of yet, but a place to start. (O'Casey, being definately Scottish) Not sure this helps but food for thought.