Carlo Amedeo Salmatoris of Roussillon was one of the main figures of the court of Charles Emmanuel III of Savoy, king of Sardinia from 1730 to 1773.
He belonged to an ancient patrician family from Cherasco and was the sixth son of Gian Secondo (1643-1732) - senator of Piedmont, then president of the Senate of Nice (1697), count of Lequio from 1692 and of Villars from 1723 - and of Caterina Rossillon of Bernezzo.
After following his military career during the reign of Victor Amedeo II (1675-1730), as officer of the Royal Piedmont Cavalry Regiment, became March 25 1735 one of the four butlers of the House of Carlo Emanuele III. The position was held by four people, because each held it for three months (for this reason it was called a "district" system, where "district" meant the fourth part of a year).
On 19 January 1738, Carlo Emanuele III created Salmatoris Master of ceremonies and introducer of ambassadors, one of the most important positions of the Savoy court, who was responsible for supervising court ceremonies. He held this position until his death. Of his twenty years of curial experience he left detailed and important testimony in the four volumes of Register of the ceremonials of Count Carlo Amedeo Salmatoris
His heir was his nephew Carlo Salmatoris of Roussillon (1741-1822), son of his older brother Francesco Amedeo (1687-27.XI.1761), commander of the Guards of Charles Emmanuel III, and of Elizabeth of Challant.