List of viceroys of Sicily in the context of "Ferdinand I of the Two Sicilies"

A tributary state is a pre-modern state in a particular type of subordinate relationship to a more powerful state which involved the sending of a regular token of alliance, or tribute, to the superior power (the suzerain). This token often took the form of a substantial transfer of wealth, such as the delivery of gold, produce, or slaves, so that tribute might best be seen as the payment of protection money. It might also be more symbolic: sometimes it amounted to no more than the delivery of a mark of alliance such as the bunga mas (golden flower) that rulers in the Malay Peninsula used to send to the kings of Siam, or the Tribute of the Maltese Falcon that the Grand Master of the Order of St. John used to send annually to the Viceroy of Sicily in order to rule Malta. It might also involve attendance by the subordinate ruler at the court of the hegemon in order to make a public show of submission.

The modern-day heirs of tribute hegemons tend to claim that the tributary relationship should be understood as an acknowledgement of the hegemon's sovereignty in the modern world, whereas former tributary states deny that there was any transfer of sovereignty.

Tripoli, today the capital city of Libya, was a presidio of the Spanish Empire in North Africa between 1510 and 1530. The city was captured by Spanish forces in July 1510, and for the next two decades it was administered as an outpost which fell under the jurisdiction of the Spanish Viceroy of Sicily. The city was granted as a fief to the Knights Hospitaller in 1530, and the latter ruled the city until 1551.