ALL SAINTS CELEBRATED IN JUNE Saints celebrated on the 3rd of June WELCOME! ERPO, ABBOT Archbishop Anno (Hanno) of Cologne appointed Erbo abbot of the monastery of Siegberg (Siburgum) he had founded. Erpo flourished in the 11th century. (I. 270) (Information from Stadler 's Complete Encyclopedia of Saints, Volume 2, Augsburg, 1861, p. 87) 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