Roman Catholic Diocese of Helena 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, Idaho, and Montana. Before becoming a diocese, this was the Vicariate of Montana (covering the whole territory and then state of Montana). For its first twenty years, the diocese served all of Montana. In 1904 the new Diocese of Great Falls-Billings
Helena (wife of Inge the Elder) case have been "Mö Sigtornsdotter". If so Mö-Maer and Helena were probably separate queens, but the equation has been criticized as lacking corroborating evidence. It is also sometimes suggested that Helena was of Greek or Russian origin, but this is unconfirmed and unlikely. Queen Helena or Elin has long been confused in history with Saint Helena of Skövde (d. c. 1135), who lived in Sweden during the same period. This is a misconception which has no support from historians now. Helena (wife of Inge the Elder) Queen Helena or Elin, possibly also known as Maer, Mär or Mö (Old Norse