Roman Catholic Archdiocese of Nidaros

Columns: Diocese | Territory | Cathedral | Founded
Bjørgvin ( earlier Selje ) | Christ Church | 1068 1068 | Oslo | St. Hallvards Cathedral | 1068 1068 | Hamar | Hamar Cathedral | 1152 1152 | Stavanger | Stavanger Cathedral | 1125 1125 | Kirkjubøur | Faroe Islands | St. Magnus Cathedral | 1100 c. 1100 | Kirkjuvagr | Orkney and Shetland | St. Magnus Cathedral | 1035 c. 1035 | Suðreyjar | Isle of Man , Islands of the Clyde and the Hebrides | Peel Cathedral | 1154 1154 | Skálholt | Southern Iceland | Skálholt Cathedral | 1056 1056 | Hólar | Northern Iceland | Hólar Cathedral | 1106 1106 | Garðar | Greenland | Gardar Cathedral | 1124 1124

Example questions:
How many islands are inhabited in the territory where a Roman Catholic cathedral is whose first bishop was William the Old ? | How many kilometres north-northwest of Scotland is the Territory where a ruined Roman Catholic cathedral is in the village of Kirkjubøur ? | How many square miles is the area of the territory where Solveig Lára Guðmundsdóttir is currently Bishop ? | How many municipalities is the Territory where a Roman Catholic Cathedral known formally as the Cathedral of Saint Nicholas is ?

Answers:
20 | 320 | 40,000 | five