In the tenth and eleventh centuries, the first Capetians—while being the kings of France—were among the least powerful of the great feudal lords of France in terms of territory possessed.
However, the medieval system of appanage (a concession of a fief with its land rights by the sovereign to his younger sons, which reverts to the crown upon the extinction of the male line of the original holder) alienated large territories from the royal domain and sometimes created dangerous rivals (especially the Duchy of Burgundy from the 14th to the 15th centuries).
The Edict of Moulins (1566) declared that the royal domain (defined in the second article as all the land controlled by the crown for more than ten years) could not be alienated, except in two cases: by interlocking, in the case of financial emergency, with a perpetual option to repurchase the land; and to form an appanage, which must return to the crown in its original state on the extinction of the male line.
At the beginning of Hugh Capet's reign, the crown estate was extremely small and consisted mostly of scattered possessions in the Île-de-France and Orléanais regions (Senlis, Poissy, Orléans), with several other isolated pockets, such as Attigny.
From the reign of Francis I, the concept of "royal domain" begins to coincide with the French kingdom in general; the appanage of the House of Bourbon however remains alienated.