Definition of a fief:

An estate of land, especially one held on condition of feudal service; a fee.

Definition of a vassal state:

A vassal state is any state that is subordinate to another. The vassal in these cases is the ruler, rather than the state itself. Being a vassal most commonly implies providing military assistance to the dominant state when requested to do so.

These definitions appear to be describing the same thing. Is there any distinction or are they completely synonymous? Is the distinction that a vassal state has some power as a political entity but a fief does not?

2 Answers 2


A vassal state has sovereignty, whereas a fief does not.

This means, as just one example, that the legal code of a fief is subordinate to that of the liege while a vassal state has full authority for its own legal code.

Similar for foreign policy, other than the direct requirements of the tribute paid or due.

For instance when the Elector of Brandenburg first became a monarch, he was required by the Austrian Kaiser to be titled King in Prussia. Only later with increasing authority and wealth of Brandenburg-Prussia was the title upgraded to King of Prussia.

  • It might be helpful to clarify how a state can have full authority for its own legal code while still being in vassalage to another. -- If the country which the vassal state is a vassal of says "jump", and the vassal state is supposed to jump, how can that be considered "full authority"? Isn't sovereignty the (at least technical) ability to say "no" to external polities?
    – R.M.
    Commented Apr 7, 2018 at 15:00
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    @R.M.: Clearly vassalage imposes limits on sovereignty - but (in principle - details will vary case-by-case) solely over foreign policy decisions and actions. Simple vassalage imposes no limits on domestic policies of the vassal. Commented Apr 7, 2018 at 15:11
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    Tiny nitpick: In return for Hohenzollern assistance in the War of the Spanish Succession and support for the Habsburg candidate in the subsequent election, Emperor Leopold I allowed Frederick to crown himself "King in Prussia". Only two royal titles were permitted within the borders of the Holy Roman Empire–King of the Germans [...] and King of Bohemia. However, Prussia lay outside the empire, and the Hohenzollerns were fully sovereign over it. Frederick thus argued that Germanic law of the time allowed him to rule Prussia as a kingdom. Commented Apr 7, 2018 at 15:23
  • @DenisdeBernardy: Yep - sounds about right. I never claimed that either party had a grievance over the arrangement. Commented Apr 7, 2018 at 22:56

IMHO opinion a fief is anything that was actually made into a fief. A vassal state is a state that is either in a feudal relationship to a more powerful one, and thus is literally a fief, or else a state that is in a relationship to a larger one that is simular to a feudal vassal status.

A fief was anything that was made into a fief by a feudal relationship. A fief was typically a piece of land, but didn't necessarily have to be a piece of land. A fief was held in return for a service to the lord, typically a specified amount of service in war, but could be any service.

For example, when the Ottomans conquered Rhodes, the Knights Hospitalers were now homeless. The King of Sicily (Emperor Charles V) granted them the Islands of Malta as a fief, on the terms of paying one falcon per year. The novel and movies The Maltese Falcon claim that for the first year's payment the knights sent not a living falcon but a golden bejeweled falcon.

A typical bottom level fief was a manor, a large country estate of hundreds or thousands of acres, whose lord typically had much but not unlimited civil and criminal jurisdiction over the occupants. Of course it was perfectly possible to hold a fraction of a manor as a fief. More important lords held several different manors as fiefs. Titled noblemen typically had over lordship over all the manors in their region, the manor holders being their vassals, as well as having their own manors. These noblemen would be in turn the vassals of higher nobles, and so on.

Even though the lowest lord of a manor exercised some governmental functions, that was not enough to make the typical feudal manor exactly a state and thus a vassal state, just as a municipal government does not usually count as a subordinate state.

And on the other hand, the very largest fiefs definitely counted as states of a kind and thus as vassal states. For example, the Kingdom of Thessalonica in the Latin Empire, or the Kingdom of Bohemia in the Holy Roman Empire. And in the colonial era, many large and powerful African and Asian states became sort of vassal states of various colonial powers.

I am not certain where to draw the line, or more logically a broad fuzzy zone, between ordinary vassal fiefs and vassal states. But it would be somewhere above the typical feudal manor and somewhere below vassal kingdoms and at least some vassal duchies.

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