origin
The name is of Viking origin. A group of Vikings went up the Eure River in France and when they were required to have a surname they chose the name caillouet because the area where they settled was very rocky with pebbles. The name they chose was the French word for pebble. In 1066 at least one Caillouet joined the Norman invasion of England and he became quite friendly with the bureaucracy and received many favours from the King.