1: The town of Chiasso, Switzerland. This region of Switzerland was
French speaking and the town existed before the 12th century.
People who came from Chiasso were known as Chiassons.

2: The name Chiasson appears in the mining area behind Tarbes, near
Lourdes, in the 15th century. This area was mined for iron and tin.

3: Pierre Chiasson was a tenant farmer in St. Sauveur du Nuaille,
Aunis, circa 1630, then moved to LaRocelle about 1650.