There are even clues in documents from 1414 (“oppidum Nydernberg prope dictam Wesaliam”) that Niederburg had been raised to town.

In 1434, though, Niederburg’s autonomy was revoked, and through Archbishop Raban von Helmstatt’s actions, it was once again merged with the town of Oberwesel.

In the Second World War, 52 bombs were dropped in and around Niederburg in an Allied air-raid shortly after 13:00 on 21 November 1944.

[1] The German blazon reads: In silbernem Schild, über grünem Hügel (Dreiberg) ein rotes zinnengekröntes Burghaus mit 5 Fenstern und 2 Schießscharten, über dem Tor mit Fallgitter, in silbernem Schildchen ein rotes Kreuz.

The municipality’s arms might in English heraldic language be described thus: Argent in base a mount of three vert, above which a castle house embattled of six gules with five windows in fess of the field and two arrowslits, one each side of a gateway with half-open portcullis, above which an escutcheon of the field charged with a cross of the third.

The charge is the Niederburg castle house, where cannon were deployed for the first time in military action in the Rhineland.

The “mount of three”, a charge called a Dreiberg in German, refers to the hilly countryside around Niederburg.

[6] The following are listed buildings or sites in Rhineland-Palatinate’s Directory of Cultural Monuments:[7] Niederburg's village church, whose patron by visitation protocol in 1657 is Saint Stephen, and which was first mentioned in 1309, still has its original Romanesque tower.

In the Middle Ages, Niederburg belonged to the archdeaconry of Karden and the rural chapter of Boppard.