Roman Catholic Diocese of Helena was formed to serve eastern Montana. The seat of the diocese is in the Cathedral of St. Helena in the state capital of Helena. It was completed in 1914. The bishops of the Diocese of Helena and their years of service: Roman Catholic Diocese of Helena The Diocese of Helena () is the Catholic diocese for western Montana with its cathedral located in Helena, the state capital. The diocese was erected from the year-old Vicarate of Montana on March 7, 1884, while Montana was still a territory. The diocese is a suffragan of the Archdiocese of Portland, which encompasses Oregon,
Helena of Adiabene twenty ells. The rabbis used to go in and out and make no remark about it'." Helena moved to Jerusalem, where she is buried in the pyramidal tomb which she had constructed during her lifetime, three stadia north of Jerusalem. The catacombs are known as "Tombs of the Kings." A sarcophagus with the inscription "Sara Malkatha", in Hebrew and Syriac, found in the nineteenth century by Louis Felicien de Saulcy, is supposed to be that of Helena. The royal palace of Queen Helena is believed to have been discovered by archaeologist Doron Ben-Ami during excavations in the City of David