Reau Family History
Reau Surname Meaning
Variant of Rheault, a surname of French (or possibly Breton) origin. Compare Rau.
In some cases, probably also French (Réau): variant of Réal (see Real).
It serves as a habitational name referring in part to Réau in Seine-et-Marne.
Source: Dictionary of American Family Names 2nd edition, 2022
