Umberto I of Italy
In 1895, King Umberto I of Italy recognised Antonio as the heir of the title Duke of Galliera. The legitimate heir of the title, Phlipp la Renotière von Ferrary (1850–1917) refused to use it and Antonio brought forward his relations with the family of the last Duchess of Galliera, Maria of Brignole-Sale (1812–1888) to obtain the title.