Schönburg Castle

Schönburg Castle stands above the town of Oberwesel in the Upper Middle Rhine Valley, located in the modern German state of Rhineland-Palatinate. It was built in the first half of the 12th century, though its exact founder remains uncertain. Some sources suggest the Archbishop of Magdeburg may have commissioned it, while others propose it was established as an imperial castle.

The earliest recorded mention of Schönburg dates to 1149, when it was held as a fief by Hermann von Stahleck. Hermann is historically noted for murdering his rival Otto II of Rheineck at the castle. By the 14th century, the Electorate of Trier had gained control over the site. Throughout this period, the Lords of Schönburg, a ministerial family, managed the castle under various overlords, including the archbishop of Magdeburg, the emperor, and the archbishop of Trier.

By the mid-13th century, the Schönburg family had divided into several branches, each residing simultaneously within the castle due to joint inheritance, a practice known as Ganerbschaft. This arrangement led to Schönburg becoming a Ganerbenburg, or a castle shared by multiple co-owners. A 1340 record lists 95 co-owners, though not all lived on the premises. The castle was divided into three separate residential areas, each with its own defensive tower, or bergfried.

In the first half of the 14th century, the castle’s defenses were significantly enhanced with the construction of the “Hoher Mantel,” a massive shield wall. This fortification, likely built under the direction of Balduin of Trier, protected the castle’s most vulnerable side and featured a distinctive rounded arch frieze.

Schönburg’s medieval prominence ended in 1689 when French troops destroyed it during the War of the Grand Alliance, also known as the Pfälzischer Erbfolgekrieg. After the last Schönburg heir died in 1719, the ruined castle reverted to the Electorate of Trier.

The castle remained in ruins for nearly two centuries until the late 19th century. Between 1885 and 1901, T. J. Oakley Rhinelander, a German-American whose family had emigrated from the Rhineland in the late 18th century, undertook partial restoration efforts. In 1950, the town of Oberwesel reacquired the site. Subsequent rebuilding transformed the northern part into a youth hostel and the southern section into a hotel.

Historically, the Lords of Schönburg also governed Oberwesel and controlled customs rights along the Rhine River. One notable family member, Friedrich von Schönburg, known as “Marshall Schomberg,” was a prominent 17th-century military leader who served several European powers.