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Family name Gaillard (Gaillard
, Гайяр
, Galiard
) , across the world, is a common last name. The family name Gaillard is habitual in Saint Lucia, where it is quite a common surname, France, and Guadeloupe (explore the name in all countries). Measured by absolute frequency, this name is the most popular in France, the United States, and Switzerland. Very seldom, Gaillard is the forename as well as the last name.