The title Prince of Gothia (princeps Gothiæ) or Prince of the Goths (princeps Gothorum) was a title of nobility, sometimes assumed by its holder as a sign of supremacy in the region of Gothia and sometimes bestowed by the sovereign of West Francia to the principal nobleman in the south of the realm, in the ninth and tenth centuries.
The first employer of the title "Duke of Septimania" was William of Gellone, who acted as Charlemagne's chief official and missus in the region.
Sometime around 858, Charles the Bald granted Humfrid several Catalan counties and the title Gothiæ marchio, signifying the same supremacy over the Hispanic march that Bernard had held years earlier.
In the early 880s, Charles the Fat employed three marchiones to act as viceroys in the major parts of his realm that he did not regularly visit.
In 932, Rudolph of France revived the title and bestowed it (princeps Gothiæ) on the brothers Ermengol of Rouergue and Raymond Pons of Toulouse.