Mermuth distinguishes itself by its quiet location off any thoroughfare; it can only be reached over a short branch road that leads nowhere else.

According to oral tradition, a pledge was made, after the village had been beset by a whole series of fires over a short time – some caused by troops in the Thirty Years' War – to keep this day to secure the protection of the “Mother of God”.

[1] The German blazon reads: Schild durch eingeschweifte grüne Spitze, darin eine goldene Kapelle, gespalten, vorne in silber ein rotes Balkenkreuz, hinten in Silber drei rote Schnallen schrägrechts aneinandergereiht.

The red cross on the dexter (armsbearer's right, viewer's left) side refers to the Bishopric of Trier.

On the green field between the two sides of the “mantle” partition stands a gold chapel, which is meant to refer to the local peculiarity of the Mermuther Feiertag in the Virgin Mary’s honour.