Origin: 1300–50;Middle Englishprincipalite < Old French < Late Latinprīncipālitās first place, superiority (Medieval Latin: authority or territory of a prince). See principal, -ity
c.1300, "position of a prince," from O.Fr. principalite (Fr. principauté), from L.L. principalitatem (nom. principalitas), from principalis (see principal). Meaning "region or state ruled by a prince" is attested from c.1400.