European primogeniture

Timeline

1. 1100–1200Normandy and England · Norman landsNorman feudal practice developed the custom of the eldest son succeeding to fiefs and titles, preserving the integrity of estates and avoiding the weakening of military and political power through partition, forming the institutional prototype of later primogeniture.
2. c. 1215–1400England and the Kingdom of France · Western EuropeEnglish common law precedents and continental fief customary law gradually wrote the eldest son's priority into aristocratic family rules and royal edicts, restricting the fragmentation of estates caused by grants to younger sons.
3. 1471–1480Duchy of Burgundy and the Iberian kingdoms · Burgundy–IberiaIn the 1470s, nobles in Burgundy, Castile, and England commonly invoked the principle of eldest-son succession in inheritance disputes to ensure the stable, continuous succession of cross-territorial duchies and dynastic lands.
4. 1600European monarchies · EuropeThe principle of primogeniture was gradually written into statutory inheritance law for thrones and noble titles, becoming an important institutional foundation of early modern European territorial states and dynastic legitimacy.