The former municipality and present village of Rottenegg includes the hamlets of Hornlohe, Moosmühle and Brunn.

[2] On 21 August 1279 the last male descendant of the family, Heinrich II von Rotteneck, the Bishop Count of Regensburg, sold Rottenegg castle and its possessions including the Mainburg castle to Duke Ludwig II of Bavaria so he could build his cathedral.

In 1722 a church was built on the site in a picturesque location above the village, preserving a part of the castle wall.

The French Brigadier General Henri François Lambert of the Army of the Rhine and Moselle who died on 7 September 1796 in Neustadt an der Donau is buried here.

[5] The piece of shrapnel that fatally injured him is kept in the village church of Mauern, Neustadt at his request.