Roman Catholic Diocese of Sion Roman Catholic Diocese of Sion The Diocese of Sion (, , ) is a Roman Catholic ecclesiastical territory in the canton of Valais, Switzerland. It is the oldest bishopric in the country and one of the oldest north of the Alps. The history of the Bishops of Sion, of the Abbey of St. Maurice of Valais as a whole are inextricably intertwined. The see was established at Octodurum, now called Martigny, the capital of the Roman province of Alpes Poeninae. The first authentically historical bishop was Saint Theodore/Theodolus (died in 391), who was present at the Council of Aquileia in
Sion (periodical) Sion (periodical) Sion (in Armenian Սիոն) is a periodical of the Armenian Patriarchate of Jerusalem and its official organ. It started publication in Jerusalem in 1866 until 1877 when it ceased publication for 50 years. It resumed publication in 1927 by the order of Patriarch Yeghishe Tourian and has continued with brief interruptions until today. "Sion" has published extensive news of the Patriarchate and its activities in its territorial jurisdiction (Israel, Palestine and Jordan), asserting its special position in the Armenian Apostolic Church, its relation to the Mother Church in Armenia and relation to other churches, political authorities, organizations and