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Family name Gateau (Gato
, Gâteau
, Gateau
) , worldwide, is a common surname. The surname Gateau is habitual in Guadeloupe, where it is quite a common surname, Portugal, and Mauritius, where it is quite a rare surname. Measured by absolute frequency, it is commonest in Brazil, France, and Philippines. Very seldom, Gateau is the forename as well as the last name.