* As an English surname, from the noun grove. * As a French surname, Americanized from Le Groux, Le Greux, reduced from Gréoul, of Germanic origin, from *grēduz (“hunger”) + *wulfaz (“wolf”). * As a north German surname, from the Low German noun Graf (“ditch, grave”) (see grave). Also a Dutch and Low German form of Grub. * As a German surname, variant of Graf.