twigs in the town's coat of arms symbolize this heritage. The Märker, as the townsmen sometimes called themselves, had to defend their autonomy against local noble families’ ambitions; these included the Rannenbergs and the Rienecks, and further pressures came from the Archbishops of Mainz. These last built Alzenau Castle (Burg Alzenau) on the Kahl's right bank, across from Wilmundsheim, between 1395 and 1399 to protect their local holdings. In 1401, the settlement below this castle was granted town and market rights by King Ruprecht of the Palatinate, although these could not be realized. A few years later, the old centre of Wilmundsheim was destroyed and it was melded with the settlement across the Kahl, whereupon it also took the castle's name. In the course of striving for Imperial reform, Emperor Maximilian I enfeoffed both the Archbishopric of Mainz and the Counts of Hanau in 1500 with the joint lordship over the free court, for which the two fiefholders were together to appoint the Amtmann ("bailiff" or "governor"). Conflicts arose from the inhabitants’ insistence on their ancestral freedoms and the denominational antagonism between the Calvinist Counts of Hanau on the one side and the Catholic population and the Archbishop on the other. The condominium lasted until the Counts of Hanau died out in 1736. The Archbishop of Mainz then took over the free court as its only surviving lord, but in 1740 had to cede the Amt of Somborn to the Landgraves of Hesse-Kassel, who were the heirs to the County of Hanau, after a fierce legal battle. What was thereafter left of the free court was incorporated as the Amt of Alzenau into the Archbishopric of Mainz. The Wheel of Mainz in the town's arms still recalls this time today. The Reichsdeputationshauptschluss of 1803 awarded the Amt of Alzenau to the Landgrave of Hesse-Darmstadt. In 1816, the Grand Duchy of Hesse ceded the Amt to the Kingdom of Bavaria, and Alzenau has since remained Bavarian. In 1862, Alzenau was raised to district seat. With the building of the Kahlgrundbahn railway, the community – and thereby the whole Kahlgrund (the countryside along the river Kahl) – was linked to the railway network as of 1898. In 1951, Alzenau was granted town rights by the Free State of Bavaria. In the course of municipal reform, the old Alzenau and Aschaffenburg districts were merged in 1972. The communities of Albstadt, Kälberau and Wasserlos