No later than the 14th century, and quite likely earlier, there were a church in Irmenach and a chapel in Beuren, to whose upkeep the inhabitants of Thalkleinich also had to contribute, even if their ecclesiastical needs were being satisfied by the one in Kleinich, which was only a few hundred metres away.

This was not accomplished before an acrimonious dispute between the two centres, for the Beuren dwellers were of the opinion that any new church building should happen in their village.

When the old church was torn down, the paintings, of which there is no doubt there were many, were all lost; such artworks can still be found at Lötzbeuren and Raversbeuren.

In the chapel in pre-Reformation times was a picture of the saint, which is likewise witnessed as the object of pilgrimages.

In particular, its proximity to the Grevenburg (castle) often led to occupation by enemy armies, under which the villagers suffered greatly.

Nevertheless, there might have been a few families who were under Electoral-Trier serfdom and who therefore remained Catholic, even if – unlike what happened in other municipalities – a simultaneum was never instituted at the church.

Beginning in 1815, Irmenach belonged to Prussia and was grouped into the Mayoralty of Büchenbeuren in the newly formed district of Zell.

By decree of the Regierungsbezirk government in Trier, from 30 October 1974, the two until then self-administering municipalities of Irmenach and Beuren were dissolved and merged into a single one.

[5] According to local lore, Irmenach slate was used in the building of, among others, the Reichstag in Berlin and Brussels Cathedral.

The biggest employer since the War ended has been the Hans Kirst firm, located in Irmenach, which today makes horse box stalls.