The real name of the village is Rabat, but since 1931 the French post office administration has decided that the name has to be labelled as Rabat-les-Trois-Seigneurs to avoid a confusion with the city of Rabat in Morocco.
The area was owned by the Abbey of Lagrasse in the early 11th century, before coming under the control of the Seigneurs of Termes.
The name comes from ‘’Becr’’, a Norse word for stream, together with the name of the Mortagne family, seigneurs of the village.
As an actual title the word "captal" was used only by the seigneurs of Trene, Puychagut, Épernon and Buch.
The land there was controlled by three English seigneurs: Colonel Henry Caldwell had purchased what had been the Foucault Seigneurie, which ran along the Richelieu River and a little over the present day frontier; Colonel Gabriel Christie was seigneur of Noyan; and Thomas Dunn was seigneur of Saint-Armand.
The Orcher suffix comes from the name of the first seigneurs of the village, now corrupted to Orcher, but originally Aurichier (alor = alder and kjarr / ker = marsh. Cf. Ellerker, Yorkshire), that took themselves in turn their name from the same place, where the chateau is located.
La Faloise was then in the hands of the Montmorency family, seigneurs of Breteuil.
It became a convention among the seigneurs of Roussillon and Catalonia and was first proclaimed in 1027 at the Council of Toulouges – a town of Roussillon – which was presided over by Oliba, bishop of Vic, the first notable patron of the movement.
The young community found patrons in the seigneurs of Simiane, whose support enabled them to build the abbey church, consecrated in 1178.
This is the ancient fief of the seigneurs of the Croy family, restored as a country house at the end of the 17th century.