The functions of the Marquis of Gothia and Duke of Narbonne, which they also possessed, became empty and meaningless titles which were transmitted to the younger branch of Rouergue.

At the death of the Countess Bertha of Rouergue, these titles were inherited by a scion of the senior line, Raymond, Count of Saint-Gilles, which allowed him to be an early territorial power.

Raymond of Saint-Gilles managed to establish the principality as a power, which he gave to his son Bertrand, after departing for the First Crusade.

The counts of Toulouse, who played a significant part in the Crusades, also possessed the County of Tripoli in the Holy Land.

Launched in 1208 by Pope Innocent III, it aimed to crush heresy and to subdue the powerful lords of the south and their wealthy domains.

But after a new offensive launched by King Louis VIII, Raymond VII gave in and signed the Treaty of Meaux in 1229.

In 1271, the county of Toulouse merged into the crown as an inheritance of Philip III, King of France, nephew of Alphonse.

The last agnatic descendant of the Counts of Toulouse, of the "Raymondine" branch, died on 13 August 1577[3] in the person of Jean Antoine, Viscount of Montclar and Baron of Salvagnac.

[4] He belonged to a cadet branch descended from Bertrand of Toulouse, Viscount of Bruniquel and natural son of Raymond VI.