ALL SAINTS CELEBRATED IN AUGUST Saints celebrated on the 30th of August ERUS, ABBOT Erus (Ero) was a Cistercian abbot of Armentiers (Armentaria) in northern France. Some sources list him as "Blessed Erus", but his official veneration has not been proven . (VI. 543) (Information from Stadler 's Complete Encyclopedia of Saints, Volume 2, Augsburg, 1861, p. 88) Stadler's Complete Encyclopedia of Saints - Sources and Abbreviations Sources of these articles (in the original German): books.google.co.uk, de-academic.com, zeno.org, openlibrary.org