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
Ion Theodorescu-Sion government ordinance. Theodorescu-Sion died in Bucharest, on March 31, 1939, and was buried in a Bellu cemetery crypt. His last selection of works was presented to the public as part of the Official Salon, which opened the same month in Bucharest. "Gândirea" published his obituary, signed by Crainic, and opening with the words: "Theodorescu-Sion died unexpectedly, in the full summer of his life and of his boundlessly fecund talent." Theodorescu-Sion was probably the most protean Romanian oil painter. Sion's interests in trying out formulas was taken with reserve by some in the public. Writing for the Transylvanian readership of "Luceafărul",