The House of Grailly is a noble family from the Pays de Gex, which rose in the southern French nobility through marriage.

The family originated from Lake Geneva in the County of Savoy.

Jean I de Grailly presumably was part of Peter II of Savoy entourage, whose niece married King Henry III of England.

Jean would gain royal favour from King Edward I England and would receive the viscounty of Benauges.

Later generations would gain among others, the County of Foix, the Duchy of Nemours, and the Kingdom of Navarre.