The history of Dinslaken has its roots in the High Middle Ages, with the first documentary mention of the settlement dating back to 1163. It is believed that the name of the city is derived from old words meaning "dwelling by the water" or "lake", which accurately described the marshy landscape of the area in the Rhine Valley. Dinslaken received official city status in 1273, when Count Dietrich VII of Cleves granted it town rights, which became the starting point for transforming the small settlement into a fortified administrative centre.
The development of the city was driven by a combination of several strategic and geographical factors:
- Political Influence: Dinslaken formed around a fortress built by the Counts of Cleves. The castle served as a residence for the nobility and an important military outpost on the border of their domain, protecting the territory from the claims of neighbours, particularly the Archbishopric of Cologne.
- Geography: Its location in the Lower Rhine, near the confluence of the Emscher and Rhine rivers, provided access to waterways, although it required a constant struggle against floods.
- Trade: The granting of market privileges allowed the city to become a local centre for the exchange of goods, actively attracting merchants from surrounding villages.
The economy of early Dinslaken was based on the traditional structure of that time. Craft guilds played an important role, with weavers, cloth makers, and blacksmiths being particularly prominent, although agriculture remained the basis of livelihood for the townspeople. The spiritual and cultural centre of the community became the Church of St. Vincentius, the construction of which began in the Gothic style. Urban development gradually formed around the temple and the castle, creating the recognisable historical appearance of the old town.