This abbey was founded by Irish monks who had assembled at the French abbey of Melleray in the early 19th century. It will close in January, 2025.
When, in 1833, a group of Irish monks returned from France and successfully founded Mount Melleray back in their native land, it was one step in the slow healing of traumas inflicted on the Church not only by the French Revolution but by anti-Catholic legislation in Ireland itself. Mount Melleray was the first monastery established in Ireland after the Catholic Emancipation. It is closing now because no one has joined in so long. 
At least six foundations from Mt. Melleray were successful, with two of them attaining a certain prominence. The very first, New Melleray (pictured below), established itself in Iowa, USA.

Their successful casket company garnered praise during the Corona crisis when it offered simple caskets free of charge for those who were struggling to get by. 
Another prominent foundation (see below) was Mt. Saint Bernard in England, where Blessed Cyprian Tansi entered and completed his holy life in 1964. A youthful abbot of that monastery has become the often-read, dynamic, and admired bishop of Trondheim, Eric Varden.

This detail from Hubert Robert's Hermit in the Colosseum (1790) is a good example of the the genre: Architectural ruins are presented as the space for devotions, but only a select few understand their supernatural dimension. The monk (he could be a Cistercian wearing his cowl) is praying at an abandoned altar in the Colosseum, which is itself a paradoxical but compelling site, declared sacred by Benedict XIV in 1749. There Christians were persecutered, there saints were made.
​The monk is framed by chattering women from the market stealing flowers on the left, and a cat who looks suspiciously like a rat on the upper right. The monk remains oblivious to them, it is his office to mourn. Notice that the flowers are below an image of the Virgin Mary. 

Dieses Faltblatt aus dem Jahr 1960, vom Mehrerauer Abt Heinrich Groner herausgegeben, setzt die Mitgliedschaft in der frommen Vereinigung "Passio-Catholica" dem Familiarenstand gleich. Das Mitglied verspricht und unterschreibt, sich als "Ganzopfer" mit allen Gebeten, Arbeiten, Mühen, Verzichten und Leiden mit den Herzen Jesu und Mariens zu vereinigen. Die vier seiten des Blattes folgen: