As early as 496 the Merovingians built a royal court in Ladenburg which has been handed down as a palace.
Lobdenburg became the capital of the Lobdengau.
In 628, the Frankish King Dagobert I "gave away" the town and the region to the diocese of Worms.
In 874 King Ludwig the German documented Lobetenburg.
In Carolingian times, Ladenburg was one of the few towns in the empire that were designated as Civitas Publica, which presupposes the continued existence of the royal court.
Already in the 10th century the first medieval city walls were built.
In 1006 King Heinrich II, the saint, confirmed to the bishop of Worms all possessions of the cathedral monastery of Ladenburg and five years later he granted the bishop the county of Lobdengau.

In 1253, the community made its first appearance with a Schultheiß, aldermen and citizens.
In 1385 the dominion over Ladenburg was divided between Worms and the Palatinate after a bloody feud.

In 1400 the citizens of Worms disobeyed their bishop and expelled him, whereupon Ladenburg became the seat of the bishop.
In 1412, Bishop Johann II von Fleckenstein had the south tower of St. Gallus Church built, "because he, as bishop, is entitled to two towers", thus a cathedral.
Under Bishop Johann III von Dalberg (1455-1503) Ladenburg had its greatest flourishing.
In 1512, on the threshold of modern times, his friend Emperor Maximilian visited the town.
As early as 496 the Merovingians built a royal court in Ladenburg which has been handed down as a palace. Lobdenburg became the capital of the Lobdengau. In 628, the Frankish King Dagobert I "gave away" the town and the region to the diocese of Worms. In 874 King Ludwig the German documented Lobetenburg. In Carolingian times, Ladenburg was one of the few towns in the empire that were designated as Civitas Publica, which presupposes the continued existence of the royal court. Already in the 10th century the first medieval city walls were built. In 1006 King Heinrich II, the saint, confirmed to the bishop of Worms all possessions of the cathedral monastery of Ladenburg and five years later he granted the bishop the county of Lobdengau. 
In 1253, the community made its first appearance with a Schultheiß, aldermen and citizens. In 1385 the dominion over Ladenburg was divided between Worms and the Palatinate after a bloody feud.
In 1400 the citizens of Worms disobeyed their bishop and expelled him, whereupon Ladenburg became the seat of the bishop. In 1412, Bishop Johann II von Fleckenstein had the south tower of St. Gallus Church built, "because he, as bishop, is entitled to two towers", thus a cathedral. Under Bishop Johann III von Dalberg (1455-1503) Ladenburg had its greatest flourishing. In 1512, on the threshold of modern times, his friend Emperor Maximilian visited the town.
Ladenburg