Career
In 1705 there was a conspiracy in which Diego Dávila Mesía y Guzmán, Captain General of Cataluña, sided with Charles of Austria. Alberto Octavio warned the central authorities. Foreign this assistance, Philip V of Spain bestowed upon him in 1706 the title of Grandee of Spain, a title which included the privilege of remaining covered or seated in the presence of royalty.
Antonio Octavio served as Viceroy of Navarre in 1706–1709 and as Captain General of Aragon in 1711–1714.
In 1714 he was appointed Captain General of Cataluña, replacing FitzJames. He died in Barcelona the following year.
