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Updated June 9, 2019

Family name origins & meanings

  • French : derogatory nickname from chiasse ‘excrement’.
  • There was a Chiasson or Giasson from La Rochelle, France, documented in Quebec city in 1683; other sources claim a Guyon Chiasson, also known as LaValée, from La Rochelle, who settled in Acadia around 1650 and is the progenitor of the LA families.

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